[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"project-803":3},{"id":4,"name":5,"fullName":6,"owner":7,"repo":5,"description":8,"homepage":9,"htmlUrl":10,"language":10,"languages":10,"totalLinesOfCode":10,"stars":11,"forks":12,"watchers":13,"openIssues":14,"contributorsCount":15,"subscribersCount":15,"size":15,"stars1d":16,"stars7d":17,"stars30d":18,"stars90d":15,"forks30d":15,"starsTrendScore":19,"compositeScore":20,"rankGlobal":10,"rankLanguage":10,"license":21,"archived":22,"fork":22,"defaultBranch":23,"hasWiki":24,"hasPages":22,"topics":25,"createdAt":10,"pushedAt":10,"updatedAt":28,"readmeContent":29,"aiSummary":30,"trendingCount":15,"starSnapshotCount":15,"syncStatus":31,"lastSyncTime":32,"discoverSource":33},803,"awesome-java","akullpp\u002Fawesome-java","akullpp","A curated list of awesome frameworks, libraries and software for the Java programming language.","",null,48149,7681,2155,1,0,10,83,298,54,120,"Other",false,"master",true,[26,27],"awesome","awesome-list","2026-06-06 04:00:30","# Awesome Java [![Awesome](https:\u002F\u002Fawesome.re\u002Fbadge.svg)](https:\u002F\u002Fawesome.re)\n\nA curated list of awesome Java frameworks, libraries and software.\n\n[Please find a different kind of layout here](https:\u002F\u002Fgithub.com\u002Fakullpp\u002Fawesome-java\u002Ftree\u002Ftest).\n\nWe are evaluating to make this the default, you can provide feedback here in [#1171](https:\u002F\u002Fgithub.com\u002Fakullpp\u002Fawesome-java\u002Fissues\u002F1171).\n\n## Contents\n\n- [Awesome Java](#awesome-java-)\n  - [Contents](#contents)\n  - [Projects](#projects)\n    - [Architecture](#architecture)\n    - [Artificial Intelligence](#artificial-intelligence)\n    - [Bean Mapping](#bean-mapping)\n    - [Build](#build)\n    - [Bytecode Manipulation](#bytecode-manipulation)\n    - [Caching](#caching)\n    - [CLI](#cli)\n      - [Argument Parsing](#argument-parsing)\n      - [Text-Based User Interfaces](#text-based-user-interfaces)\n    - [Cloud](#cloud)\n    - [Code Analysis](#code-analysis)\n    - [Code Coverage](#code-coverage)\n    - [Code Generators](#code-generators)\n    - [Compiler-compiler](#compiler-compiler)\n    - [Computer Vision](#computer-vision)\n    - [Configuration](#configuration)\n    - [Constraint Satisfaction Problem Solver](#constraint-satisfaction-problem-solver)\n    - [CSV](#csv)\n    - [Data Structures](#data-structures)\n    - [Database](#database)\n    - [Date and Time](#date-and-time)\n    - [Decentralization](#decentralization)\n    - [Dependency Injection](#dependency-injection)\n    - [Development](#development)\n    - [Distributed Applications](#distributed-applications)\n    - [Distributed Transactions](#distributed-transactions)\n    - [Distribution](#distribution)\n    - [Document Processing](#document-processing)\n    - [Financial](#financial)\n    - [Formal Verification](#formal-verification)\n    - [Functional Programming](#functional-programming)\n    - [Game Development](#game-development)\n    - [Geospatial](#geospatial)\n    - [GUI](#gui)\n    - [High Performance](#high-performance)\n    - [HTTP Clients](#http-clients)\n    - [Hypermedia Types](#hypermedia-types)\n    - [IDE](#ide)\n    - [Imagery](#imagery)\n    - [Introspection](#introspection)\n    - [Job Scheduling](#job-scheduling)\n    - [JSON](#json)\n    - [JVM and JDK](#jvm-and-jdk)\n    - [Logging](#logging)\n    - [Machine Learning](#machine-learning)\n    - [Messaging](#messaging)\n    - [Microservice](#microservice)\n    - [Miscellaneous](#miscellaneous)\n    - [Mobile Development](#mobile-development)\n    - [Monitoring](#monitoring)\n    - [Native](#native)\n    - [Natural Language Processing](#natural-language-processing)\n    - [Networking](#networking)\n    - [ORM](#orm)\n    - [PaaS](#paas)\n    - [Pathfinding](#pathfinding)\n    - [PDF](#pdf)\n    - [Performance analysis](#performance-analysis)\n    - [Platform](#platform)\n      - [Apache Commons](#apache-commons)\n      - [Other](#other)\n    - [Processes](#processes)\n    - [Reactive libraries](#reactive-libraries)\n    - [REST Frameworks](#rest-frameworks)\n    - [Science](#science)\n    - [Search](#search)\n    - [Security](#security)\n    - [Serialization](#serialization)\n    - [Server](#server)\n    - [Template Engine](#template-engine)\n    - [Testing](#testing)\n      - [Asynchronous](#asynchronous)\n      - [BDD](#bdd)\n      - [Fixtures](#fixtures)\n      - [Frameworks](#frameworks)\n      - [Matchers](#matchers)\n      - [Miscellaneous](#miscellaneous-1)\n      - [Mocking](#mocking)\n    - [Utility](#utility)\n    - [Version Managers](#version-managers)\n    - [Web Crawling](#web-crawling)\n    - [Web Frameworks](#web-frameworks)\n    - [Workflow Orchestration Engines](#workflow-orchestration-engines)\n  - [Resources](#resources)\n    - [Related Awesome Lists](#related-awesome-lists)\n    - [Communities](#communities)\n    - [Frontends](#frontends)\n    - [Influential Books](#influential-books)\n    - [Podcasts and Screencasts](#podcasts-and-screencasts)\n    - [People](#people)\n      - [Socials](#socials)\n    - [Websites](#websites)\n  - [Contributing](#contributing)\n\n## Projects\n\n### Architecture\n\n_Frameworks and libraries that help implementing and verifying design and architecture concepts._\n\n- [ArchUnit](https:\u002F\u002Fgithub.com\u002FTNG\u002FArchUnit) - Test library for specifying and asserting architecture rules.\n- [jMolecules](https:\u002F\u002Fgithub.com\u002Fxmolecules\u002Fjmolecules) - Annotations and interfaces to express design and architecture concepts in code.\n\n### Artificial Intelligence\n\n_Frameworks that help you to leverage LLMs and AI._\n\n- [JamJet](https:\u002F\u002Fgithub.com\u002Fjamjet-labs\u002Fjamjet) - Agent runtime with a Java SDK for building AI agents, supporting graph-based workflow orchestration, multi-agent coordination, and MCP\u002FA2A protocols.\n- [LangChain4j](https:\u002F\u002Fgithub.com\u002Flangchain4j\u002Flangchain4j) - Simplifies integration of LLMs with unified APIs and a comprehensive toolbox.\n- [MCP Java SDK](https:\u002F\u002Fgithub.com\u002Fmodelcontextprotocol\u002Fjava-sdk) - Enables applications to interact with AI models and tools through a standardized interface (i.e. Model Context Protocol), supporting both synchronous and asynchronous communication patterns.\n- [simple-openai](https:\u002F\u002Fgithub.com\u002Fsashirestela\u002Fsimple-openai) - Library to use the OpenAI API (and compatible ones) in the simplest possible way.\n- [Spring AI](https:\u002F\u002Fspring.io\u002Fprojects\u002Fspring-ai) - Application framework for AI engineering for Spring.\n\n### Bean Mapping\n\n_Frameworks that ease bean mapping._\n\n- [dOOv](https:\u002F\u002Fgithub.com\u002Fdoov-io\u002Fdoov) - Provides fluent API for typesafe domain model validation and mapping. It uses annotations, code generation and a type safe DSL to make bean validation and mapping fast and easy.\n- [JMapper](https:\u002F\u002Fgithub.com\u002Fjmapper-framework\u002Fjmapper-core) - Uses byte code manipulation for lightning-fast mapping. Supports annotations and API or XML configuration.\n- [MapStruct](https:\u002F\u002Fgithub.com\u002Fmapstruct\u002Fmapstruct) - Code generator that simplifies mappings between different bean types, based on a convention-over-configuration approach.\n- [ModelMapper](https:\u002F\u002Fgithub.com\u002Fmodelmapper\u002Fmodelmapper) - Intelligent object mapping library that automatically maps objects to each other.\n- [Orika](https:\u002F\u002Fgithub.com\u002Forika-mapper\u002Forika) - JavaBean-mapping framework that recursively copies (among other capabilities) data from one object to another.\n- [reMap](https:\u002F\u002Fgithub.com\u002Fremondis-it\u002Fremap) - Lambda and method handle-based mapping which requires code and not annotations if objects have different names.\n- [Selma](https:\u002F\u002Fgithub.com\u002Fxebia-france\u002Fselma) - Annotation processor-based bean mapper.\n\n### Build\n\n_Tools that handle the build cycle and dependencies of an application._\n\n- [Apache Maven](https:\u002F\u002Fmaven.apache.org) - Declarative build and dependency management that favors convention over configuration. It might be preferable to Apache Ant, which uses a rather procedural approach and can be difficult to maintain.\n- [Bazel](https:\u002F\u002Fbazel.build) - Tool from Google that builds code quickly and reliably.\n- [Buck2](https:\u002F\u002Fgithub.com\u002Ffacebook\u002Fbuck2) - Encourages the creation of small, reusable modules consisting of code and resources.\n- [Gradle](https:\u002F\u002Fgradle.org) - Incremental builds programmed via Groovy instead of declaring XML. Works well with Maven's dependency management.\n\n- [ReleaseRun](https:\u002F\u002Freleaserun.com) - Dependency health checker for pom.xml and Gradle projects that scans for CVEs and outdated packages.\n### Bytecode Manipulation\n\n_Libraries to manipulate bytecode programmatically._\n\n- [ASM](https:\u002F\u002Fasm.ow2.io) - All-purpose, low-level bytecode manipulation and analysis.\n- [Byte Buddy](https:\u002F\u002Fbytebuddy.net) - Further simplifies bytecode generation with a fluent API.\n- [bytecode-viewer](https:\u002F\u002Fgithub.com\u002FKonloch\u002Fbytecode-viewer) - Java 8 Jar & Android APK reverse engineering suite. (GPL-3.0-only)\n- [Byteman](https:\u002F\u002Fbyteman.jboss.org) - Manipulate bytecode at runtime via DSL (rules); mainly for testing\u002Ftroubleshooting. (LGPL-2.1-or-later)\n- [cglib](https:\u002F\u002Fgithub.com\u002Fcglib\u002Fcglib) - Bytecode generation library.\n- [Javassist](https:\u002F\u002Fgithub.com\u002Fjboss-javassist\u002Fjavassist) - Tries to simplify bytecode editing.\n- [Maker](https:\u002F\u002Fgithub.com\u002Fcojen\u002Fmaker) - Provides low level bytecode generation.\n- [Mixin](https:\u002F\u002Fgithub.com\u002FSpongePowered\u002FMixin) - Manipulate bytecode at runtime using real Java code.\n- [Perses](https:\u002F\u002Fgithub.com\u002Fnicolasmanic\u002Fperses) - Dynamically injects failure\u002Flatency at the bytecode level according to principles of chaos engineering.\n- [Recaf](https:\u002F\u002Fwww.coley.software\u002FRecaf\u002F) - JVM reverse engineering toolkit, essentially an IDE for Java bytecode.\n\n### Caching\n\n_Libraries that provide caching facilities._\n\n- [cache2k](https:\u002F\u002Fcache2k.org) - In-memory high performance caching library.\n- [Caffeine](https:\u002F\u002Fgithub.com\u002Fben-manes\u002Fcaffeine) - High-performance, near-optimal caching library.\n- [Ehcache](http:\u002F\u002Fwww.ehcache.org) - Distributed general-purpose cache.\n- [Infinispan](https:\u002F\u002Finfinispan.org) - Highly concurrent key\u002Fvalue datastore used for caching.\n\n### CLI\n\n_Libraries for everything related to the CLI._\n\n#### Argument Parsing\n\n_Libraries to assist with parsing command line arguments._\n\n- [Airline](https:\u002F\u002Frvesse.github.io\u002Fairline\u002F) - Annotation-based framework for parsing Git-like command-line arguments.\n- [JCommander](http:\u002F\u002Fjcommander.org) - Command-line argument-parsing framework with custom types and validation via implementing interfaces.\n- [jbock](https:\u002F\u002Fgithub.com\u002Fjbock-java\u002Fjbock) - Reflectionless command line parser.\n- [JLine](https:\u002F\u002Fgithub.com\u002Fjline\u002Fjline3) - Includes features from modern shells like completion or history.\n- [picocli](https:\u002F\u002Fpicocli.info) - ANSI colors and styles in usage help with annotation-based POSIX\u002FGNU\u002Fany syntax, subcommands, strong typing for both options and positional args.\n\n#### Text-Based User Interfaces\n\n_Libraries that provide TUI frameworks, or building blocks related functions._\n\n- [AliveJTUI](https:\u002F\u002Fgithub.com\u002Fyehorsyrin\u002FalivejTUI) - Declarative, React-style TUI library for building terminal UIs as component trees with diff-based rendering, focus management, and themes.\n- [Jansi](https:\u002F\u002Fgithub.com\u002Ffusesource\u002Fjansi) - ANSI escape codes to format console output.\n- [Jexer](https:\u002F\u002Fgitlab.com\u002FAutumnMeowMeow\u002Fjexer) - Advanced console (and Swing) text user interface (TUI) library, with mouse-draggable windows, built-in terminal window manager, and sixel image support. Looks like [Turbo Vision](https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FTurbo_Vision).\n- [Text-IO](https:\u002F\u002Fgithub.com\u002Fberyx\u002Ftext-io) - Aids the creation of full console-based applications.\n- [Lanterna](https:\u002F\u002Fgithub.com\u002Fmabe02\u002Flanterna) - Easy console text-GUI library, similar to curses. (LGPL-3.0-only)\n\n### Cloud\n\n_Libraries to integrate or use cloud-specific features._\n\n- [AWS SDK for Java](https:\u002F\u002Fgithub.com\u002Faws\u002Faws-sdk-java) - Provides Java APIs for interacting with Amazon Web Services.\n- [Google Cloud Client Libraries](https:\u002F\u002Fgithub.com\u002Fgoogleapis\u002Fgoogle-cloud-java) - Client libraries for accessing Google Cloud services from Java applications.\n\n### Code Analysis\n\n_Tools that provide metrics and quality measurements._\n\n- [Checkstyle](https:\u002F\u002Fgithub.com\u002Fcheckstyle\u002Fcheckstyle) - Static analysis of coding conventions and standards. (LGPL-2.1-or-later)\n- [Error Prone](https:\u002F\u002Fgithub.com\u002Fgoogle\u002Ferror-prone) - Catches common programming mistakes as compile-time errors.\n- [Error Prone Support](https:\u002F\u002Fgithub.com\u002FPicnicSupermarket\u002Ferror-prone-support) - Error Prone extensions: extra bug checkers and a large battery of Refaster templates.\n- [Infer](https:\u002F\u002Fgithub.com\u002Ffacebook\u002Finfer) - Modern static analysis tool for verifying the correctness of code.\n- [jQAssistant](https:\u002F\u002Fjqassistant.org) - Static code analysis with Neo4J-based query language. (GPL-3.0-only)\n- [NullAway](https:\u002F\u002Fgithub.com\u002Fuber\u002FNullAway) - Eliminates NullPointerExceptions with low build-time overhead.\n- [PMD](https:\u002F\u002Fgithub.com\u002Fpmd\u002Fpmd) - Source code analysis for finding bad coding practices.\n- [p3c](https:\u002F\u002Fgithub.com\u002Falibaba\u002Fp3c) - Provides Alibaba's coding guidelines for PMD, IDEA and Eclipse.\n- [RefactorFirst](https:\u002F\u002Fgithub.com\u002Fjimbethancourt\u002FRefactorFirst) - Identifies and prioritizes God Classes and Highly Coupled classes.\n- [SonarJava](https:\u002F\u002Fgithub.com\u002FSonarSource\u002Fsonar-java) - Static analyzer for SonarQube & SonarLint. (LGPL-3.0-only)\n- [Spoon](https:\u002F\u002Fgithub.com\u002FINRIA\u002Fspoon) - Library for analyzing and transforming Java source code.\n- [Spotbugs](https:\u002F\u002Fgithub.com\u002Fspotbugs\u002Fspotbugs) - Static analysis of bytecode to find potential bugs. (LGPL-2.1-only)\n- [ToolsHref](https:\u002F\u002Ftoolshref.com) - Online Java code analyzer and JSON-to-Mermaid visualization tool.\n\n### Code Coverage\n\n_Frameworks and tools that enable code coverage metrics collection for test suites._\n\n- [Clover](https:\u002F\u002Fwww.atlassian.com\u002Fsoftware\u002Fclover) - Relies on source-code instrumentation instead of bytecode instrumentation.\n- [Cobertura](https:\u002F\u002Fcobertura.github.io\u002Fcobertura\u002F) - Relies on offline (or static) bytecode instrumentation and class loading to collect code coverage metrics. (GPL-2.0-only)\n- [Delta Coverage](https:\u002F\u002Fgithub.com\u002Fgw-kit\u002Fdelta-coverage-plugin) - Computes code coverage of new and modified code based on a provided diff, supporting JaCoCo and IntelliJ coverage engines.\n- [JaCoCo](https:\u002F\u002Fwww.eclemma.org\u002Fjacoco\u002F) - Framework that enables collection of code coverage metrics, using both offline and runtime bytecode instrumentation.\n\n### Code Generators\n\n_Tools that generate patterns for repetitive code in order to reduce verbosity and error-proneness._\n\n- [ADT4J](https:\u002F\u002Fgithub.com\u002Fsviperll\u002Fadt4j) - JSR-269 code generator for algebraic data types.\n- [Auto](https:\u002F\u002Fgithub.com\u002Fgoogle\u002Fauto) - Generates factory, service, and value classes.\n- [Avaje Http Server](https:\u002F\u002Favaje.io\u002Fhttp\u002F) - Generates Lightweight JAX-RS style http servers using Javalin or Helidon (Nima) SE.\n- [Bootify ![c]](https:\u002F\u002Fbootify.io) - Browser-based Spring Boot app generation with JPA model and REST API.\n- [EasyEntityToDTO](https:\u002F\u002Fgithub.com\u002FMarcel091004\u002FEasyEntityToDTO) - Annotation processor for automatic DTO and Mapper generation with zero boilerplate.\n- [FreeBuilder](https:\u002F\u002Fgithub.com\u002Finferred\u002FFreeBuilder) - Automatically generates the Builder pattern.\n- [Geci](https:\u002F\u002Fgithub.com\u002Fverhas\u002Fjavageci) - Discovers files that need generated code, updates automatically and writes to the source with a convenient API.\n- [Immutables](https:\u002F\u002Fimmutables.github.io) - Annotation processors to generate simple, safe and consistent value objects.\n- [JavaPoet](https:\u002F\u002Fgithub.com\u002Fsquare\u002Fjavapoet) - API to generate source files.\n- [JHipster](https:\u002F\u002Fgithub.com\u002Fjhipster\u002Fgenerator-jhipster) - Yeoman source code generator for Spring Boot and AngularJS.\n- [Joda-Beans](https:\u002F\u002Fwww.joda.org\u002Fjoda-beans\u002F) - Small framework that adds queryable properties to Java, enhancing JavaBeans.\n- [JPA Buddy ![c]](https:\u002F\u002Fwww.jpa-buddy.com) - Plugin for IntelliJ IDEA. Provides visual tools for generating JPA entities, Spring Data JPA repositories, Liquibase changelogs and SQL scripts. Offers automatic Liquibase\u002FFlyway script generation by comparing model to DB, and reverse engineering JPA entities from DB tables.\n- [JSpecify Package-Info Generator](https:\u002F\u002Fgithub.com\u002Fbcaillard\u002Fjspecify-packageinfo-generator) - Maven plugin that automatically generates package-info.java files with JSpecify annotations (@NullMarked and @NullUnmarked), helping you manage nullness boundaries in your Java projects without manual boilerplate.\n- [Lombok](https:\u002F\u002Fprojectlombok.org) - Code generator that aims to reduce verbosity.\n- [Record-Builder](https:\u002F\u002Fgithub.com\u002FRandgalt\u002Frecord-builder) - Companion builder class, withers and templates for Java records.\n- [Spring CRUD Generator](https:\u002F\u002Fgithub.com\u002Fmzivkovicdev\u002Fspring-crud-generator) - Maven plugin for generating Spring Boot CRUD applications from YAML\u002FJSON specifications.\n- [Telosys](https:\u002F\u002Fwww.telosys.org\u002F) - Simple and light code generator available as an Eclipse Plugin and also as a CLI.\n\n### Compiler-compiler\n\n_Frameworks that help to create parsers, interpreters or compilers._\n\n- [ANTLR](https:\u002F\u002Fwww.antlr.org) - Complex full-featured framework for top-down parsing.\n- [JavaCC](https:\u002F\u002Fjavacc.github.io\u002Fjavacc\u002F) - Parser generator that generates top-down parsers. Allows lexical state switching and permits extended BNF specifications.\n- [JFlex](https:\u002F\u002Fjflex.de) - Lexical analyzer generator.\n\n### Computer Vision\n\n_Libraries which seek to gain high level information from images and videos._\n\n- [BoofCV](https:\u002F\u002Fboofcv.org) - Library for image processing, camera calibration, tracking, SFM, MVS, 3D vision, QR Code and much more.\n- [ImageJ](https:\u002F\u002Fimagej.net\u002FImageJ) - Medical image processing application with an API.\n- [JavaCV](https:\u002F\u002Fgithub.com\u002Fbytedeco\u002Fjavacv) - Java interface to OpenCV, FFmpeg, and much more.\n\n### Configuration\n\n_Libraries that provide external configuration._\n\n- [avaje config](https:\u002F\u002Favaje.io\u002Fconfig\u002F) - Loads yaml and properties files, supports dynamic configuration, plugins, file-watching and config event listeners.\n- [centraldogma](https:\u002F\u002Fgithub.com\u002Fline\u002Fcentraldogma) - Highly-available version-controlled service configuration repository based on Git, ZooKeeper and HTTP\u002F2.\n- [ClearConfig](https:\u002F\u002Fgithub.com\u002Fjapgolly\u002Fclear-config-java) - Type-safe, composable configuration library with a focus on runtime clarity.\n- [config](https:\u002F\u002Fgithub.com\u002Flightbend\u002Fconfig) - Configuration library supporting Java properties, JSON or its human optimized superset HOCON.\n- [Configurate](https:\u002F\u002Fgithub.com\u002FSpongePowered\u002FConfigurate) - Configuration library with support for various configuration formats and transformations.\n- [Curator Framework](https:\u002F\u002Fcurator.apache.org\u002F) - High-level API for Apache ZooKeeper.\n- [dotenv](https:\u002F\u002Fgithub.com\u002Fshyiko\u002Fdotenv) - Twelve-factor configuration library which uses environment-specific files.\n- [Externalized Properties](https:\u002F\u002Fgithub.com\u002Fjoel-jeremy\u002Fexternalized-properties) - Simple, lightweight, yet powerful configuration library which supports resolution of properties from external sources such as files, databases, git repositories, and any custom sources, plus an extensible post-processing\u002Fconversion mechanism.\n- [Gestalt](https:\u002F\u002Fgithub.com\u002Fgestalt-config\u002Fgestalt) - Gestalt offers a comprehensive solution to the challenges of configuration management. It allows you to source configuration data from multiple inputs, merge them intelligently, and present them in a structured, type-safe manner.\n- [ini4j](http:\u002F\u002Fini4j.sourceforge.net) - Provides an API for handling Windows' INI files.\n- [KAConf](https:\u002F\u002Fgithub.com\u002Fmariomac\u002Fkaconf) - Annotation-based configuration system for Java and Kotlin.\n- [microconfig](https:\u002F\u002Fmicroconfig.io) - Configuration system designed for microservices which helps to separate configuration from code. The configuration for different services can have common and specific parts and can be dynamically distributed.\n- [owner](https:\u002F\u002Fgithub.com\u002Flviggiano\u002Fowner) - Reduces boilerplate of properties.\n\n### Constraint Satisfaction Problem Solver\n\n_Libraries that help with implementing optimization and satisfiability problems._\n\n- [Choco](https:\u002F\u002Fchoco-solver.org) - Off-the-shelf constraint satisfaction problem solver that uses constraint programming techniques.\n- [JaCoP](https:\u002F\u002Fgithub.com\u002Fradsz\u002Fjacop) - Includes an interface for the FlatZinc language, enabling it to execute MiniZinc models. (AGPL-3.0)\n- [OptaPlanner](https:\u002F\u002Fwww.optaplanner.org) - Business planning and resource scheduling optimization solver.\n- [Timefold](https:\u002F\u002Ftimefold.ai\u002Fdocs) - Flexible solver with Spring\u002FQuarkus support and quickstarts for the Vehicle Routing Problem, Maintenance Scheduling, Employee Shift Scheduling and much more.\n\n### CSV\n\n_Frameworks and libraries that simplify reading\u002Fwriting CSV data._\n\n- [FastCSV](https:\u002F\u002Fgithub.com\u002Fosiegmar\u002FFastCSV) - Performance-optimized, dependency-free and RFC 4180 compliant.\n- [jackson-dataformat-csv](https:\u002F\u002Fgithub.com\u002FFasterXML\u002Fjackson-dataformat-csv) - Jackson extension for reading and writing CSV.\n- [opencsv](http:\u002F\u002Fopencsv.sourceforge.net) - Simple CSV parser.\n- [Super CSV](https:\u002F\u002Fsuper-csv.github.io\u002Fsuper-csv\u002F) - Powerful CSV parser with support for Dozer, Joda-Time and Java 8.\n- [uniVocity-parsers](https:\u002F\u002Fgithub.com\u002FuniVocity\u002Funivocity-parsers) - One of the fastest and most feature-complete parsers. Also comes with parsers for TSV and fixed-width records.\n\n### Data Structures\n\n_Efficient and specific data structures._\n\n- [Apache Avro](https:\u002F\u002Favro.apache.org) - Data interchange format with dynamic typing, untagged data, and absence of manually assigned IDs.\n- [Apache Orc](https:\u002F\u002Forc.apache.org) - Fast and efficient columnar storage format for Hadoop-based workloads.\n- [Apache Parquet](https:\u002F\u002Fparquet.apache.org) - Columnar storage format based on assembly algorithms from Google's paper on Dremel.\n- [Apache Thrift](https:\u002F\u002Fthrift.apache.org) - Data interchange format that originated at Facebook.\n- [Big Queue](https:\u002F\u002Fgithub.com\u002Fbulldog2011\u002Fbigqueue) - Fast and persistent queue based on memory-mapped files.\n- [HyperMinHash-java](https:\u002F\u002Fgithub.com\u002FLiveRamp\u002FHyperMinHash-java) - Probabilistic data structure for computing union, intersection, and set cardinality in loglog space.\n- [Persistent Collection](https:\u002F\u002Fgithub.com\u002Fhrldcpr\u002Fpcollections) - Persistent and immutable analogue of the Java Collections Framework.\n- [Protobuf](https:\u002F\u002Fgithub.com\u002Fprotocolbuffers\u002Fprotobuf) - Google's data interchange format.\n- [RoaringBitmap](https:\u002F\u002Fgithub.com\u002FRoaringBitmap\u002FRoaringBitmap) - Fast and efficient compressed bitmap.\n- [SBE](https:\u002F\u002Fgithub.com\u002Freal-logic\u002Fsimple-binary-encoding) - Simple Binary Encoding, one of the fastest message formats around.\n- [Tape](https:\u002F\u002Fgithub.com\u002Fsquare\u002Ftape) - Lightning-fast, transactional, file-based FIFO.\n- [Wire](https:\u002F\u002Fgithub.com\u002Fsquare\u002Fwire) - Clean, lightweight protocol buffers.\n\n### Database\n\n_Everything that simplifies interactions with the database._\n\n- [Apache Calcite](https:\u002F\u002Fcalcite.apache.org) - Dynamic data management framework. It contains many of the pieces that comprise a typical database management system.\n- [Apache Drill](https:\u002F\u002Fdrill.apache.org) - Distributed, schema on-the-fly, ANSI SQL query engine for Big Data exploration.\n- [Apache Phoenix](https:\u002F\u002Fphoenix.apache.org) - High-performance relational database layer over HBase for low-latency applications.\n- [ArcadeDB](https:\u002F\u002Farcadedb.com) - Multi-model database supporting graphs, documents, key-value, time series, and vector embeddings with SQL, Cypher, Gremlin, MongoDB, and Redis API compatibility.\n- [ArangoDB](https:\u002F\u002Fgithub.com\u002Farangodb\u002Farangodb-java-driver) - ArangoDB Java driver.\n- [Chronicle Map](https:\u002F\u002Fgithub.com\u002FOpenHFT\u002FChronicle-Map) - Efficient, in-memory (opt. persisted to disk), off-heap key-value store.\n- [Debezium](https:\u002F\u002Fdebezium.io\u002F) - Low latency data streaming platform for change data capture.\n- [druid](https:\u002F\u002Fdruid.apache.org) - High-performance, column-oriented, distributed data store.\n- [eXist](https:\u002F\u002Fgithub.com\u002FeXist-db\u002Fexist) - NoSQL document database and application platform. (LGPL-2.1-only)\n- [FlexyPool](https:\u002F\u002Fgithub.com\u002Fvladmihalcea\u002Fflexy-pool) - Brings metrics and failover strategies to the most common connection pooling solutions.\n- [Flyway](https:\u002F\u002Fflywaydb.org) - Simple database migration tool.\n- [H2](https:\u002F\u002Fh2database.com) - Small SQL database notable for its in-memory functionality.\n- [HikariCP](https:\u002F\u002Fgithub.com\u002Fbrettwooldridge\u002FHikariCP) - High-performance JDBC connection pool.\n- [HSQLDB](https:\u002F\u002Fhsqldb.org\u002F) - HyperSQL 100% Java database.\n- [JDBI](http:\u002F\u002Fjdbi.org) - Convenient abstraction of JDBC.\n- [Jedis](https:\u002F\u002Fgithub.com\u002Fxetorthio\u002Fjedis) - Small client for interaction with Redis, with methods for commands.\n- [Jest](https:\u002F\u002Fgithub.com\u002Fsearchbox-io\u002FJest) - Client for the Elasticsearch REST API.\n- [jetcd](https:\u002F\u002Fgithub.com\u002Fjustinsb\u002Fjetcd) - Client library for etcd.\n- [Jinq](https:\u002F\u002Fgithub.com\u002Fmy2iu\u002FJinq) - Typesafe database queries via symbolic execution of Java 8 Lambdas (on top of JPA or jOOQ).\n- [jOOQ](https:\u002F\u002Fwww.jooq.org) - Generates typesafe code based on SQL schema.\n- [Leaf](https:\u002F\u002Fgithub.com\u002FMeituan-Dianping\u002FLeaf) - Distributed ID generate service.\n- [Lettuce](https:\u002F\u002Flettuce.io\u002F) - Lettuce is a scalable Redis client for building non-blocking Reactive applications.\n- [Liquibase](http:\u002F\u002Fwww.liquibase.org) - Database-independent library for tracking, managing and applying database schema changes.\n- [MapDB](http:\u002F\u002Fwww.mapdb.org) - Embedded database engine that provides concurrent collections backed on disk or in off-heap memory.\n- [MariaDB4j](https:\u002F\u002Fgithub.com\u002Fvorburger\u002FMariaDB4j) - Launcher for MariaDB that requires no installation or external dependencies.\n- [Modality](https:\u002F\u002Fgithub.com\u002Farkanovicz\u002Fmodality) - Lightweight ORM with database reverse engineering features.\n- [Open J Proxy](https:\u002F\u002Fgithub.com\u002FOpen-J-Proxy\u002Fojp) - Type 3 JDBC driver and Layer 7 proxy server for decoupling applications from relational database connection management.\n- [OpenDJ](https:\u002F\u002Fgithub.com\u002FOpenIdentityPlatform\u002FOpenDJ) - LDAPv3 compliant directory service, developed for the Java platform, providing a high performance, highly available, and secure store for the identities.\n- [Querydsl](http:\u002F\u002Fwww.querydsl.com) - Typesafe unified queries.\n- [QueryStream](https:\u002F\u002Fgithub.com\u002Fquerystream\u002Fquerystream) - Build JPA Criteria queries using a Stream-like API.\n- [QuestDB](https:\u002F\u002Fgithub.com\u002Fquestdb\u002Fquestdb) - High-performance SQL database for time series. Supports InfluxDB line protocol, PostgreSQL wire protocol, and REST.\n- [Realm](https:\u002F\u002Fgithub.com\u002Frealm\u002Frealm-java) - Mobile database to run directly inside phones, tablets or wearables.\n- [Redisson](https:\u002F\u002Fgithub.com\u002Fredisson\u002Fredisson) - Allows for distributed and scalable data structures on top of a Redis server.\n- [requery](https:\u002F\u002Fgithub.com\u002Frequery\u002Frequery) - Modern, lightweight but powerful object mapping and SQL generator. Easily map to or create databases, or perform queries and updates from any Java-using platform.\n- [Speedment](https:\u002F\u002Fgithub.com\u002Fspeedment\u002Fspeedment) - Database access library that utilizes Java 8's Stream API for querying.\n- [Spring Data Dynamic Query](https:\u002F\u002Fgithub.com\u002Ftdilber\u002Fspring-data-dynamic-query) - Unified dynamic query interface for Spring Data JPA, MongoDB, and Elasticsearch, enabling advanced JOIN(s), OR logic, scoped conditions, powerful projections and advanced features with zero boilerplate.\n- [Spring Data JPA MongoDB Expressions](https:\u002F\u002Fgithub.com\u002Fmhewedy\u002Fspring-data-jpa-mongodb-expressions) - Allows you to use MongoDB query language to query your relational database.\n- [Trino](https:\u002F\u002Ftrino.io) - Distributed SQL query engine for big data.\n- [Vibur DBCP](https:\u002F\u002Fwww.vibur.org) - JDBC connection pool library with advanced performance monitoring capabilities.\n- [Xodus](https:\u002F\u002Fgithub.com\u002FJetBrains\u002Fxodus) - Highly concurrent transactional schema-less and ACID-compliant embedded database.\n- [CosId](https:\u002F\u002Fgithub.com\u002FAhoo-Wang\u002FCosId) - Universal, flexible, high-performance distributed ID generator.\n- [Apache ShardingSphere](https:\u002F\u002Fgithub.com\u002Fapache\u002Fshardingsphere) - Distributed SQL transaction & query engine that allows for data sharding, scaling, encryption, and more on any database.\n\n### Date and Time\n\n_Libraries related to handling date and time._\n\n- [iCal4j](https:\u002F\u002Fgithub.com\u002Fical4j\u002Fical4j) - Parse and build iCalendar [RFC 5545](https:\u002F\u002Ftools.ietf.org\u002Fhtml\u002Frfc5545) data models.\n- [Jollyday](https:\u002F\u002Fgithub.com\u002Ffocus-shift\u002Fjollyday) - Determines the holidays for a given year, country\u002Fname and eventually state\u002Fregion.\n- [ThreeTen-Extra](https:\u002F\u002Fgithub.com\u002FThreeTen\u002Fthreeten-extra) - Additional date-time classes that complement those in JDK 8.\n- [Time4J](https:\u002F\u002Fgithub.com\u002FMenoData\u002FTime4J) - Advanced date and time library. (LGPL-2.1-only)\n\n### Decentralization\n\n_Libraries that handle decentralization tasks._\n\n- [java-tron](https:\u002F\u002Fgithub.com\u002Ftronprotocol\u002Fjava-tron) Implementation of the Tron Protocol, whic utilizes blockchains to develop decentralized applications.\n\n### Dependency Injection\n\n_Libraries that help to realize the [Inversion of Control](https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FInversion_of_control) paradigm._\n\n- [Apache DeltaSpike](https:\u002F\u002Fdeltaspike.apache.org) - CDI extension framework.\n- [Avaje Inject](https:\u002F\u002Favaje.io\u002Finject\u002F) - Microservice-focused compile-time injection framework without reflection.\n- [Dagger](https:\u002F\u002Fdagger.dev\u002F) - Compile-time injection framework without reflection.\n- [Dimension-DI](https:\u002F\u002Fgithub.com\u002Fakardapolov\u002Fdimension-di) - JSR-330 runtime dependency injection using the JDK Class-File API.\n- [Feather](https:\u002F\u002Fgithub.com\u002Fzsoltherpai\u002Ffeather) - Ultra-lightweight, JSR-330-compliant dependency injection library.\n- [Governator](https:\u002F\u002Fgithub.com\u002FNetflix\u002Fgovernator) - Extensions and utilities that enhance Google Guice.\n- [Guice](https:\u002F\u002Fgithub.com\u002Fgoogle\u002Fguice) - Lightweight and opinionated framework that completes Dagger.\n- [HK2](https:\u002F\u002Feclipse-ee4j.github.io\u002Fglassfish-hk2\u002F) - Lightweight and dynamic dependency injection framework.\n- [JayWire](https:\u002F\u002Fgithub.com\u002Fvanillasource\u002Fjaywire) - Lightweight dependency injection framework. (LGPL-3.0-only)\n\n### Development\n\n_Augmentation of the development process at a fundamental level._\n\n- [AspectJ](https:\u002F\u002Fwww.eclipse.org\u002Faspectj\u002F) - Seamless aspect-oriented programming extension.\n- [DCEVM](https:\u002F\u002Fdcevm.github.io) - JVM modification that allows unlimited redefinition of loaded classes at runtime. (GPL-2.0-only)\n- [Faux Pas](https:\u002F\u002Fgithub.com\u002Fzalando\u002Ffaux-pas) - Library that simplifies error handling by circumventing the issue that none of the functional interfaces in the Java Runtime is allowed by default to throw checked exceptions.\n- [HotswapAgent](https:\u002F\u002Fgithub.com\u002FHotswapProjects\u002FHotswapAgent) - Unlimited runtime class and resource redefinition. (GPL-2.0-only)\n- [JavaParser](https:\u002F\u002Fgithub.com\u002Fjavaparser\u002Fjavaparser) - Parse, modify and generate Java code.\n- [JavaSymbolSolver](https:\u002F\u002Fgithub.com\u002Fjavaparser\u002Fjavasymbolsolver) - Symbol solver.\n- [Manifold](https:\u002F\u002Fgithub.com\u002Fmanifold-systems\u002Fmanifold) - Re-energizes Java with powerful features like type-safe metaprogramming, structural typing and extension methods.\n- [NoException](https:\u002F\u002Fnoexception.machinezoo.com) - Allows checked exceptions in functional interfaces and converts exceptions to Optional return.\n- [SneakyThrow](https:\u002F\u002Fgithub.com\u002Frainerhahnekamp\u002Fsneakythrow) - Ignores checked exceptions without bytecode manipulation. Can also be used inside Java 8 stream operations.\n- [Tail](https:\u002F\u002Fnrktkt.github.io\u002Ftail\u002F) - Enable infinite recursion using tail call optimization.\n\n### Distributed Applications\n\n_Libraries and frameworks for writing distributed and fault-tolerant applications._\n\n- [Apache Geode](https:\u002F\u002Fgeode.apache.org) - In-memory data management system that provides reliable asynchronous event notifications and guaranteed message delivery.\n- [Apache Storm](https:\u002F\u002Fstorm.apache.org) - Realtime computation system.\n- [Apache ZooKeeper](https:\u002F\u002Fzookeeper.apache.org) - Coordination service with distributed configuration, synchronization, and naming registry for large distributed systems.\n- [Atomix](https:\u002F\u002Fatomix.io) - Fault-tolerant distributed coordination framework.\n- [Axon](https:\u002F\u002Faxoniq.io) - Framework for creating CQRS applications.\n- [Dropwizard Circuit Breaker](https:\u002F\u002Fgithub.com\u002Fmtakaki\u002Fdropwizard-circuitbreaker) - Circuit breaker design pattern for Dropwizard. (GPL-2.0-only)\n- [Failsafe](https:\u002F\u002Fgithub.com\u002Fjhalterman\u002Ffailsafe) - Simple failure handling with retries and circuit breakers.\n- [Hazelcast](https:\u002F\u002Fgithub.com\u002Fhazelcast\u002Fhazelcast) - Highly scalable in-memory datagrid with a free open-source version.\n- [JGroups](http:\u002F\u002Fwww.jgroups.org) - Toolkit for reliable messaging and cluster creation.\n- [Quasar](http:\u002F\u002Fdocs.paralleluniverse.co\u002Fquasar\u002F) - Lightweight threads and actors for the JVM.\n- [resilience4j](https:\u002F\u002Fgithub.com\u002Fresilience4j\u002Fresilience4j) - Functional fault tolerance library.\n- [OpenIG](https:\u002F\u002Fgithub.com\u002FOpenIdentityPlatform\u002FOpenIG) - High-performance reverse proxy server with specialized session management and credential replay functionality.\n- [ScaleCube Services](https:\u002F\u002Fgithub.com\u002Fscalecube\u002Fscalecube-services) - Embeddable Cluster-Membership library based on SWIM and gossip protocol.\n- [Zuul](https:\u002F\u002Fgithub.com\u002FNetflix\u002Fzuul) - Gateway service that provides dynamic routing, monitoring, resiliency, security, and more.\n\n### Distributed Transactions\n\n_Distributed transactions provide a mechanism for ensuring consistency of data updates in the presence of concurrent access and partial failures._\n\n- [Atomikos](https:\u002F\u002Fwww.atomikos.com) - Provides transactions for REST, SOA and microservices with support for JTA and XA.\n- [Bitronix](https:\u002F\u002Fgithub.com\u002Fbitronix\u002Fbtm) - Simple but complete implementation of the JTA 1.1 API.\n- [Narayana](https:\u002F\u002Fnarayana.io) - Provides support for traditional ACID and compensation transactions, also complies with JTA, JTS and other standards. (LGPL-2.1-only)\n- [Seata](https:\u002F\u002Fgithub.com\u002Fseata\u002Fseata) - Delivers high performance and easy to use distributed transaction services under a microservices architecture.\n\n### Distribution\n\n_Tools that handle the distribution of applications in native formats._\n\n- [Artipie](https:\u002F\u002Fgithub.com\u002Fartipie\u002Fartipie) - Binary artifact management toolkit which hosts them on the file system or S3.\n- [Boxfuse ![c]](https:\u002F\u002Fboxfuse.com) - Deployment of JVM applications to AWS using the principles of immutable infrastructure.\n- [Capsule](https:\u002F\u002Fgithub.com\u002Fpuniverse\u002Fcapsule) - Simple and powerful packaging and deployment. A fat JAR on steroids, or a \"Docker for Java\" that supports JVM-optimized containers.\n- [Central Repository](https:\u002F\u002Fsearch.maven.org) - Largest binary component repository available as a free service to the open-source community. Default used by Apache Maven, and available in all other build tools.\n- [Cloudsmith ![c]](https:\u002F\u002Fcloudsmith.io) - Fully managed package management SaaS with support for Maven\u002FGradle\u002FSBT with a free tier.\n- [Getdown](https:\u002F\u002Fgithub.com\u002Fthreerings\u002Fgetdown) - System for deploying Java applications to end-user computers and keeping them up to date. Developed as an alternative to Java Web Start.\n- [IzPack](http:\u002F\u002Fizpack.org) - Setup authoring tool for cross-platform deployments.\n- [JavaPackager](https:\u002F\u002Fgithub.com\u002Ffvarrui\u002FJavaPackager) - Maven and Gradle plugin which provides an easy way to package Java applications in native Windows, macOS or GNU\u002FLinux executables, and generate installers for them.\n- [jDeploy](https:\u002F\u002Fwww.jdeploy.com) - Deploy desktop apps as native Mac, Windows or Linux bundles.\n- [jlink.online](https:\u002F\u002Fgithub.com\u002FAdoptOpenJDK\u002Fjlink.online) - Builds optimized runtimes over HTTP.\n- [Nexus ![c]](https:\u002F\u002Fwww.sonatype.com) - Binary management with proxy and caching capabilities.\n- [packr](https:\u002F\u002Fgithub.com\u002Flibgdx\u002Fpackr) - Packs JARs, assets and the JVM for native distribution on Windows, Linux and macOS.\n- [really-executable-jars-maven-plugin](https:\u002F\u002Fgithub.com\u002Fbrianm\u002Freally-executable-jars-maven-plugin) - Maven plugin for making self-executing JARs.\n\n### Document Processing\n\n_Libraries that assist with processing office document formats._\n\n- [Apache POI](https:\u002F\u002Fpoi.apache.org) - Supports OOXML (XLSX, DOCX, PPTX) as well as OLE2 (XLS, DOC or PPT).\n- [documents4j](https:\u002F\u002Fdocuments4j.com\u002F#\u002F) - API for document format conversion using third-party converters such as MS Word.\n- [docx4j](https:\u002F\u002Fwww.docx4java.org\u002Ftrac\u002Fdocx4j) - Create and manipulate Microsoft Open XML files.\n- [fastexcel](https:\u002F\u002Fgithub.com\u002Fdhatim\u002Ffastexcel) - High performance library to read and write large Excel (XLSX) worksheets.\n- [Sheetz](https:\u002F\u002Fgithub.com\u002Fchitralabs\u002Fsheetz) - Library for reading and writing Excel and CSV files with annotation-based mapping, streaming support, and built-in validation.\n- [zerocell](https:\u002F\u002Fgithub.com\u002Fcreditdatamw\u002Fzerocell) - Annotation-based API for reading data from Excel sheets into POJOs with focus on reduced overhead.\n\n### Financial\n\n_Libraries related to the financial domain._\n\n- [Cassandre](https:\u002F\u002Fgithub.com\u002Fcassandre-tech\u002Fcassandre-trading-bot) - Trading bot framework.\n- [Parity](https:\u002F\u002Fgithub.com\u002Fparitytrading\u002Fparity) - Platform for trading venues.\n- [Philadelphia](https:\u002F\u002Fgithub.com\u002Fparitytrading\u002Fphiladelphia) - Low-latency financial information exchange.\n- [Square](https:\u002F\u002Fgithub.com\u002Fsquare\u002Fconnect-java-sdk) - Integration with the Square API.\n- [Stripe](https:\u002F\u002Fgithub.com\u002Fstripe\u002Fstripe-java) - Integration with the Stripe API.\n- [ta4j](https:\u002F\u002Fgithub.com\u002Fta4j\u002Fta4j) - Library for technical analysis.\n\n### Formal Verification\n\n_Formal-methods tools: proof assistants, model checking, symbolic execution, etc._\n\n- [CATG](https:\u002F\u002Fgithub.com\u002Fksen007\u002Fjanala2) - Concolic unit testing engine. Automatically generates unit tests using formal methods.\n- [Checker Framework](https:\u002F\u002Fcheckerframework.org) - Pluggable type systems. Includes nullness types, physical units, immutability types and more. (GPL-2.0-only WITH Classpath-exception-2.0)\n- [Daikon](https:\u002F\u002Fplse.cs.washington.edu\u002Fdaikon\u002F) - Detects likely program invariants and generates JML specs based on those invariants.\n- [Java Path Finder (JPF)](https:\u002F\u002Fgithub.com\u002Fjavapathfinder\u002Fjpf-core) - JVM formal verification tool containing a model checker and more. Created by NASA.\n- [JMLOK 2.0](https:\u002F\u002Fmassoni.computacao.ufcg.edu.br\u002Fhome\u002Fjmlok) - Detects inconsistencies between code and JML specification through feedback-directed random tests generation, and suggests a likely cause for each nonconformance detected. (GPL-3.0-only)\n- [KeY](https:\u002F\u002Fwww.key-project.org) - Formal software development tool that aims to integrate design, implementation, formal specification, and formal verification of object-oriented software as seamlessly as possible. Uses JML for specification and symbolic execution for verification. (GPL-2.0-or-later)\n- [OpenJML](http:\u002F\u002Fwww.openjml.org) - Translates JML specifications into SMT-LIB format and passes the proof problems implied by the program to backend solvers. (GPL-2.0-only)\n\n### Functional Programming\n\n_Libraries that facilitate functional programming._\n\n- [Cyclops](https:\u002F\u002Fgithub.com\u002Faol\u002Fcyclops) - Monad and stream utilities, comprehensions, pattern matching, functional extensions for all JDK collections, future streams, trampolines and much more.\n- [derive4j](https:\u002F\u002Fgithub.com\u002Fderive4j\u002Fderive4j) - Java 8 annotation processor and framework for deriving algebraic data types constructors, pattern-matching and morphisms. (GPL-3.0-only)\n- [Fugue](https:\u002F\u002Fbitbucket.org\u002Fatlassian\u002Ffugue) - Functional extensions to Guava.\n- [Functional Java](http:\u002F\u002Fwww.functionaljava.org) - Implements numerous basic and advanced programming abstractions that assist composition-oriented development.\n- [jOOλ](https:\u002F\u002Fgithub.com\u002FjOOQ\u002FjOOL) - Extension to Java 8 that aims to fix gaps in lambda by providing numerous missing types and a rich set of sequential Stream API additions.\n- [Packrat](https:\u002F\u002Fgithub.com\u002Fjhspetersson\u002Fpackrat) - Gatherers library for Java Stream API. Gatherers can enhance streams with custom intermediate operations.\n- [Parallel Collectors](https:\u002F\u002Fgithub.com\u002Fpivovarit\u002Fparallel-collectors) - Stream API Collectors for parallel processing with custom thread pools, designed for I\u002FO-heavy workloads.\n- [protonpack](https:\u002F\u002Fgithub.com\u002Fpoetix\u002Fprotonpack) - Collection of stream utilities.\n- [StreamEx](https:\u002F\u002Fgithub.com\u002Famaembo\u002Fstreamex) - Enhances Java 8 Streams.\n- [Vavr](https:\u002F\u002Fwww.vavr.io) - Functional component library that provides persistent data types and functional control structures.\n\n### Game Development\n\n_Frameworks that support the development of games._\n\n- [FXGL](https:\u002F\u002Falmasb.github.io\u002FFXGL\u002F) - JavaFX Game Development Framework.\n- [input4j](https:\u002F\u002Fgurkenlabs.github.io\u002Finput4j\u002F) - Lightweight, cross-platform library for gamepad and joystick input handling.\n- [JBox2D](http:\u002F\u002Fwww.jbox2d.org\u002F) - Port of the renowned C++ 2D physics engine.\n- [jMonkeyEngine](https:\u002F\u002Fjmonkeyengine.org) - Game engine for modern 3D development.\n- [libGDX](https:\u002F\u002Flibgdx.com) - All-round cross-platform, high-level framework.\n- [Litiengine](https:\u002F\u002Flitiengine.com\u002F) - AWT-based, lightweight 2D game engine.\n- [LWJGL](https:\u002F\u002Fwww.lwjgl.org) - Robust framework that abstracts libraries like OpenGL\u002FCL\u002FAL.\n- [Mini2Dx](https:\u002F\u002Fmini2dx.org) - Beginner-friendly, master-ready framework for rapidly prototyping and building 2D games.\n- [Void2D](https:\u002F\u002Fgithub.com\u002Fxzripper\u002FVoid2D) - High-level 2D game engine with built-in physics based on Swing.\n- [vulkan4j](https:\u002F\u002Fgithub.com\u002Fchuigda\u002Fvulkan4j) - Vulkan, OpenGL ES2 and GLFW Memory Allocator bindings.\n\n### Geospatial\n\n_Libraries for working with geospatial data and algorithms._\n\n- [Apache SIS](https:\u002F\u002Fsis.apache.org) - Library for developing geospatial applications.\n- [ArcGIS Maps SDK for Java ![c]](https:\u002F\u002Fgithub.com\u002FEsri\u002Farcgis-maps-sdk-java-samples\u002F) - JavaFX library for adding mapping and GIS functionality to desktop apps.\n- [Geo](https:\u002F\u002Fgithub.com\u002Fdavidmoten\u002Fgeo) - GeoHash utilities in Java.\n- [GeoTools](https:\u002F\u002Fgeotools.org) - Library that provides tools for geospatial data. (LGPL-2.1-only)\n- [GraphHopper](https:\u002F\u002Fgithub.com\u002Fgraphhopper\u002Fgraphhopper) - Road-routing engine. Used as a Java library or standalone web service.\n- [H2GIS](http:\u002F\u002Fwww.h2gis.org) - Spatial extension of the H2 database. (LGPL-3.0-only)\n- [Jgeohash](https:\u002F\u002Fastrapi69.github.io\u002Fjgeohash\u002F) - Library for using the GeoHash algorithm.\n- [Mapsforge](https:\u002F\u002Fgithub.com\u002Fmapsforge\u002Fmapsforge) - Map rendering based on OpenStreetMap data. (LGPL-3.0-only)\n- [Spatial4j](https:\u002F\u002Fgithub.com\u002Flocationtech\u002Fspatial4j) - General-purpose spatial\u002Fgeospatial library.\n\n### GUI\n\n_Libraries to create modern graphical user interfaces._\n\n- [JavaFX](https:\u002F\u002Fwiki.openjdk.java.net\u002Fdisplay\u002FOpenJFX\u002FMain) - Successor of Swing.\n- [Scene Builder](https:\u002F\u002Fgluonhq.com\u002Fproducts\u002Fscene-builder\u002F) - Visual layout tool for JavaFX applications.\n- [SnapKit](https:\u002F\u002Fgithub.com\u002Freportmill\u002FSnapKit) - Modern Java UI library for both desktop and web.\n- [Sierra](https:\u002F\u002Fgithub.com\u002FHTTP-RPC\u002FSierra) - Lightwieght declarative DSL for rapid development of Swing applications.\n- [SWT](https:\u002F\u002Fwww.eclipse.org\u002Fswt\u002F) - Graphical widget toolkit.\n\n### High Performance\n\n_Everything about high-performance computation, from collections to specific libraries._\n\n- [Agrona](https:\u002F\u002Fgithub.com\u002Freal-logic\u002FAgrona) - Data structures and utility methods that are common in high-performance applications.\n- [Disruptor](https:\u002F\u002Flmax-exchange.github.io\u002Fdisruptor\u002F) - Inter-thread messaging library.\n- [Eclipse Collections](https:\u002F\u002Fgithub.com\u002Feclipse\u002Feclipse-collections) - Collections framework inspired by Smalltalk.\n- [fastutil](http:\u002F\u002Ffastutil.di.unimi.it) - Fast and compact type-specific collections.\n- [HPPC](https:\u002F\u002Flabs.carrotsearch.com\u002Fhppc.html) - Primitive collections.\n- [JCTools](https:\u002F\u002Fgithub.com\u002FJCTools\u002FJCTools) - Concurrency tools currently missing from the JDK.\n- [Koloboke](https:\u002F\u002Fgithub.com\u002Fleventov\u002FKoloboke) - Carefully designed extension of the Java Collections Framework with primitive specializations and more.\n\n### HTTP Clients\n\n_Libraries that assist with creating HTTP requests and\u002For binding responses._\n\n- [Apache HttpComponents](https:\u002F\u002Fhc.apache.org\u002F) - Toolset of low-level Java components focused on HTTP and associated protocols.\n- [Async Http Client](https:\u002F\u002Fgithub.com\u002FAsyncHttpClient\u002Fasync-http-client) - Asynchronous HTTP and WebSocket client library.\n- [Avaje Http Client](https:\u002F\u002Favaje.io\u002Fhttp-client) - Wrapper on JDK 11's HttpClient that adds Feign-like interface among other enhancements.\n- [Feign](https:\u002F\u002Fgithub.com\u002FOpenFeign\u002Ffeign) - HTTP client binder inspired by Retrofit, JAXRS-2.0, and WebSocket.\n- [Google HTTP Client](https:\u002F\u002Fgithub.com\u002Fgoogleapis\u002Fgoogle-http-java-client) - Pluggable HTTP transport abstraction with support for java.net.HttpURLConnection, Apache HTTP Client, Android, Google App Engine, XML, Gson, Jackson and Protobuf.\n- [methanol](https:\u002F\u002Fgithub.com\u002Fmizosoft\u002Fmethanol) - HTTP client extensions library.\n- [Retrofit](https:\u002F\u002Fsquare.github.io\u002Fretrofit\u002F) - Typesafe REST client.\n- [Ribbon](https:\u002F\u002Fgithub.com\u002FNetflix\u002Fribbon) - Client-side IPC library that is battle-tested in the cloud.\n- [Riptide](https:\u002F\u002Fgithub.com\u002Fzalando\u002Friptide) - Client-side response routing for Spring's RestTemplate.\n- [unirest-java](https:\u002F\u002Fgithub.com\u002FKong\u002Funirest-java) - Simplified, lightweight HTTP client library.\n\n### Hypermedia Types\n\n_Libraries that handle serialization to hypermedia types._\n\n- [hate](https:\u002F\u002Fgithub.com\u002Fblackdoor\u002Fhate) - Builds hypermedia-friendly objects according to HAL specification.\n- [JSON-LD](https:\u002F\u002Fgithub.com\u002Fjsonld-java\u002Fjsonld-java) - JSON-LD implementation.\n- [Siren4J](https:\u002F\u002Fgithub.com\u002Feserating-chwy\u002Fsiren4j) - Library for the Siren specification.\n- [Spring HATEOAS](https:\u002F\u002Fgithub.com\u002Fspring-projects\u002Fspring-hateoas) - Standalone and Spring support for building hypermedia-based APIs using HAL, HAL FORMS, Collection+JSON, ALPS and UBER.\n\n### IDE\n\n_Integrated development environments that try to simplify several aspects of development._\n\n- [Eclipse](https:\u002F\u002Fwww.eclipse.org) - Established open-source project with support for lots of plugins and languages.\n- [IntelliJ IDEA ![c]](https:\u002F\u002Fwww.jetbrains.com\u002Fidea\u002F) - Supports many JVM languages and provides good options for Android development. The commercial edition targets the enterprise sector.\n- [jGRASP](https:\u002F\u002Fwww.jgrasp.org) - Created to provide software visualizations that work in conjunction with the debugger such as Control Structure Diagrams, UML class diagrams and Object Viewer.\n- [NetBeans](https:\u002F\u002Fnetbeans.apache.org) - Provides integration for several Java SE and EE features, from database access to HTML5.\n- [SnapCode](https:\u002F\u002Freportmill.com\u002FSnapCode\u002F) - Modern IDE for Java running in the browser, focused on education.\n- [Visual Studio Code](https:\u002F\u002Fcode.visualstudio.com\u002Fdocs\u002Flanguages\u002Fjava) - Provides Java support for lightweight projects with a simple, modern workflow by using extensions from the internal marketplace.\n\n### Imagery\n\n_Libraries that assist with the creation, evaluation or manipulation of graphical images._\n\n- [Barcode-Lib4J](https:\u002F\u002Fgithub.com\u002Fvws-java\u002FBarcode-Lib4J) - Generates QR Code, DataMatrix, and other 1D\u002F2D barcodes as vector (PDF, EPS, SVG) and raster (PNG, BMP, JPG) images with DPI awareness, high precision, and CMYK color model support.\n- [Imgscalr](https:\u002F\u002Fgithub.com\u002Frkalla\u002Fimgscalr) - Simple, efficient and hardware-accelerated image-scaling library implemented in pure Java 2D.\n- [Tess4J](https:\u002F\u002Fgithub.com\u002Fnguyenq\u002Ftess4j) - JNA wrapper for Tesseract OCR API.\n- [Thumbnailator](https:\u002F\u002Fgithub.com\u002Fcoobird\u002Fthumbnailator) - High-quality thumbnail generation library.\n- [TwelveMonkeys](https:\u002F\u002Fgithub.com\u002Fharaldk\u002FTwelveMonkeys) - Collection of plugins that extend the number of supported image file formats.\n- [ZXing](https:\u002F\u002Fgithub.com\u002Fzxing\u002Fzxing) - Multi-format 1D\u002F2D barcode image processing library.\n- [image-comparison](https:\u002F\u002Fgithub.com\u002Fromankh3\u002Fimage-comparison) - Library that compares 2 images with the same sizes and shows the differences visually by drawing rectangles. Some parts of the image can be excluded from the comparison.\n- [vips-ffm](https:\u002F\u002Fgithub.com\u002Flopcode\u002Fvips-ffm) - Comprehensive bindings for libvips, using Java's \"Foreign Function & Memory\" API.\n- [scrimage](https:\u002F\u002Fsksamuel.github.io\u002Fscrimage) - Immutable, functional, and performant JVM library for manipulation of images.\n\n### Introspection\n\n_Libraries that help make the Java introspection and reflection API easier and faster to use._\n\n- [ClassGraph](https:\u002F\u002Fgithub.com\u002Fclassgraph\u002Fclassgraph) - ClassGraph (formerly FastClasspathScanner) is an uber-fast, ultra-lightweight, parallelized classpath scanner and module scanner for Java, Scala, Kotlin and other JVM languages.\n- [jOOR](https:\u002F\u002Fgithub.com\u002FjOOQ\u002FjOOR) - jOOR stands for jOOR Object Oriented Reflection. It is a simple wrapper for the java.lang.reflect package.\n- [Mirror](http:\u002F\u002Fprojetos.vidageek.net\u002Fmirror\u002Fmirror\u002F) - Mirror was created to bring light to a simple problem, usually named ReflectionUtil, which is on almost all projects that rely on reflection to do advanced tasks.\n- [Objenesis](http:\u002F\u002Fobjenesis.org) - Allows dynamic instantiation without default constructor, e.g. constructors which have required arguments, side effects or throw exceptions.\n- [ReflectASM](https:\u002F\u002Fgithub.com\u002FEsotericSoftware\u002Freflectasm) - ReflectASM is a very small Java library that provides high performance reflection by using code generation.\n- [Reflections](https:\u002F\u002Fgithub.com\u002Fronmamo\u002Freflections) - Reflections scans your classpath, indexes the metadata, allows you to query it on runtime and may save and collect that information for many modules within your project.\n\n### Job Scheduling\n\n_Libraries for scheduling background jobs._\n\n- [JobRunr](https:\u002F\u002Fgithub.com\u002Fjobrunr\u002Fjobrunr) - Job scheduling library which utilizes lambdas for fire-and-forget, delayed and recurring jobs. Guarantees execution by single scheduler instance using optimistic locking. Has features for persistence, minimal dependencies and is embeddable.\n- [Quartz](https:\u002F\u002Fgithub.com\u002Fquartz-scheduler\u002Fquartz) - Feature-rich, open source job scheduling library that can be integrated within virtually any Java application.\n- [Sundial](https:\u002F\u002Fgithub.com\u002Fknowm\u002FSundial) - Lightweight framework to simply define jobs, define triggers and start the scheduler.\n- [Wisp](https:\u002F\u002Fgithub.com\u002FCoreoz\u002FWisp) - Simple library with minimal footprint and straightforward API.\n- [db-scheduler](https:\u002F\u002Fgithub.com\u002Fkagkarlsson\u002Fdb-scheduler) - Persistent and cluster-friendly scheduler.\n- [easy-batch](https:\u002F\u002Fgithub.com\u002Fj-easy\u002Feasy-batch) - Set up batch jobs with simple processing pipelines. Records are read in sequence from a data source, processed in pipeline and written in batches to a data sink.\n- [shedlock](https:\u002F\u002Fgithub.com\u002Flukas-krecan\u002FShedLock) - Makes sure that your scheduled tasks are executed at most once at the same time. If a task is being executed on one node, it acquires a lock which prevents execution of the same task from another node or thread.\n\n### JSON\n\n_Libraries for serializing and deserializing JSON to and from Java objects._\n\n- [Avaje Jsonb](https:\u002F\u002Favaje.io\u002Fjsonb\u002F) - Reflection-free Json binding via source code generation with Jackson-like annotations.\n- [DSL-JSON](https:\u002F\u002Fgithub.com\u002Fngs-doo\u002Fdsl-json) - JSON library with advanced compile time databinding.\n- [Genson](http:\u002F\u002Fgenson.io) - Powerful and easy-to-use Java-to-JSON conversion library.\n- [Gson](https:\u002F\u002Fgithub.com\u002Fgoogle\u002Fgson) - Serializes objects to JSON and vice versa. Good performance with on-the-fly usage.\n- [HikariJSON](https:\u002F\u002Fgithub.com\u002Fbrettwooldridge\u002FHikariJSON) - High-performance JSON parser, 2x faster than Jackson.\n- [jackson-modules-java8](https:\u002F\u002Fgithub.com\u002FFasterXML\u002Fjackson-modules-java8) - Set of Jackson modules for Java 8 datatypes and features.\n- [Jackson-datatype-money](https:\u002F\u002Fgithub.com\u002Fzalando\u002Fjackson-datatype-money) - Open-source Jackson module to support JSON serialization and deserialization of JavaMoney data types.\n- [Jackson](https:\u002F\u002Fgithub.com\u002FFasterXML\u002Fjackson) - Similar to GSON, but offers performance gains if you need to instantiate the library more often.\n- [JSON-io](https:\u002F\u002Fgithub.com\u002Fjdereg\u002Fjson-io) - Convert Java to JSON\u002FTOON and back. Supports complex object graphs, cyclic references, and TOON format for 40-50% LLM token savings.\n- [jsoniter](http:\u002F\u002Fjsoniter.com) - Fast and flexible library with iterator and lazy parsing API.\n- [LoganSquare](https:\u002F\u002Fgithub.com\u002Fbluelinelabs\u002FLoganSquare) - JSON parsing and serializing library based on Jackson's streaming API. Outperforms GSON & Jackson's library.\n- [Moshi](https:\u002F\u002Fgithub.com\u002Fsquare\u002Fmoshi) - Modern JSON library, less opinionated and uses built-in types like List and Map.\n- [Yasson](https:\u002F\u002Fgithub.com\u002Feclipse-ee4j\u002Fyasson) - Binding layer between classes and JSON documents similar to JAXB.\n- [fastjson](https:\u002F\u002Fgithub.com\u002Falibaba\u002Ffastjson) - Very fast processor with no additional dependencies and full data binding.\n- [Jolt](https:\u002F\u002Fgithub.com\u002Fbazaarvoice\u002Fjolt) - JSON to JSON transformation tool.\n- [JsonPath](https:\u002F\u002Fgithub.com\u002Fjson-path\u002FJsonPath) - Extract data from JSON using XPATH-like syntax.\n- [JsonSurfer](https:\u002F\u002Fgithub.com\u002Fjsurfer\u002FJsonSurfer) - Streaming JsonPath processor dedicated to processing big and complicated JSON data.\n\n### JVM and JDK\n\n_Current implementations of the JVM\u002FJDK._\n\n- [Which JDK](https:\u002F\u002Fwhichjdk.com\u002F) - Overview of common JVMs with pros and cons.\n- [Adopt Open JDK](https:\u002F\u002Fadoptopenjdk.net) - Community-driven OpenJDK builds, including both HotSpot and OpenJ9.\n- [Corretto](https:\u002F\u002Faws.amazon.com\u002Fcorretto\u002F) - No-cost, multiplatform, production-ready distribution of OpenJDK by Amazon. (GPL-2.0-only WITH Classpath-exception-2.0)\n- [Dragonwell8](https:\u002F\u002Fgithub.com\u002Falibaba\u002Fdragonwell8) - Downstream version of OpenJDK optimized for online e-commerce, financial, logistics applications.\n- [Graal](https:\u002F\u002Fgithub.com\u002Foracle\u002Fgraal) - Polyglot embeddable JVM. (GPL-2.0-only WITH Classpath-exception-2.0)\n- [Liberica JDK](https:\u002F\u002Fbell-sw.com) - Built from OpenJDK, thoroughly tested and passed the JCK. (GPL-2.0-only WITH Classpath-exception-2.0)\n- [OpenJ9](https:\u002F\u002Fgithub.com\u002Feclipse\u002Fopenj9) - High performance, enterprise-calibre, flexibly licensed, openly-governed cross-platform JVM extending and augmenting the runtime technology components from the Eclipse OMR and OpenJDK project.\n- [Open JDK](https:\u002F\u002Fopenjdk.java.net) - Open JDK community home. (GPL-2.0-only WITH Classpath-exception-2.0)\n- [ParparVM](https:\u002F\u002Fgithub.com\u002Fcodenameone\u002FCodenameOne\u002Ftree\u002Fmaster\u002Fvm) - VM with non-blocking, concurrent GC for iOS. (GPL-2.0-only WITH Classpath-exception-2.0)\n- [RedHat Open JDK](https:\u002F\u002Fdevelopers.redhat.com\u002Fproducts\u002Fopenjdk\u002Foverview) - RedHat's OpenJDK distribution. (GPL-2.0-only WITH Classpath-exception-2.0)\n- [SAP Machine](https:\u002F\u002Fsap.github.io\u002FSapMachine\u002F) - SAP's no-cost, rigorously tested and JCK-verified OpenJDK friendly fork. (GPL-2.0-only WITH Classpath-exception-2.0)\n- [Zulu](https:\u002F\u002Fwww.azul.com\u002Fproducts\u002Fzulu-community\u002F) - OpenJDK builds for Windows, Linux, and macOS. (GPL-2.0-only WITH Classpath-exception-2.0)\n- [Microsoft JDK](https:\u002F\u002Fgithub.com\u002Fmicrosoft\u002Fopenjdk) - Microsoft Build of OpenJDK, Free, Open Source, Freshly Brewed!\n\n### Logging\n\n_Libraries that log the behavior of an application._\n\n- [Apache Log4j 2](https:\u002F\u002Flogging.apache.org\u002Flog4j\u002F) - Complete rewrite with a powerful plugin and configuration architecture.\n- [Echopraxia](https:\u002F\u002Fgithub.com\u002Ftersesystems\u002Fechopraxia) - API designed around structured logging, rich context, and conditional logging. There are Logback and Log4J2 implementations, but Echopraxia's API is completely dependency-free, meaning it can be implemented with any logging API.\n- [Graylog](https:\u002F\u002Fwww.graylog.org) - Open-source aggregator suited for extended role and permission management. (GPL-3.0-only)\n- [Kibana](https:\u002F\u002Fwww.elastic.co\u002Fkibana) - Analyzes and visualizes log files. Some features require payment.\n- [Logback](http:\u002F\u002Flogback.qos.ch) - Robust logging library with interesting configuration options via Groovy.\n- [Logbook](https:\u002F\u002Fgithub.com\u002Fzalando\u002Flogbook) - Extensible, open-source library for HTTP request and response logging.\n- [Logstash](https:\u002F\u002Fwww.elastic.co\u002Flogstash) - Tool for managing log files.\n- [p6spy](https:\u002F\u002Fgithub.com\u002Fp6spy\u002Fp6spy) - Enables logging for all JDBC transactions without changes to the code.\n- [SLF4J](http:\u002F\u002Fwww.slf4j.org) - Abstraction layer\u002Fsimple logging facade.\n- [tinylog](https:\u002F\u002Ftinylog.org\u002Fv2\u002F) - Lightweight logging framework with static logger class.\n- [OpenTracing Toolbox](https:\u002F\u002Fgithub.com\u002Fzalando\u002Fopentracing-toolbox) - Collection of libraries that build on top of OpenTracing and provide extensions and plugins to existing instrumentations.\n- [Flogger](https:\u002F\u002Fgoogle.github.io\u002Fflogger\u002F) - Flogger is a fluent logging API for Java. It supports a wide variety of features, and has many benefits over existing logging APIs.\n\n### Machine Learning\n\n_Tools that provide specific statistical algorithms for learning from data._\n\n- [Apache Flink](https:\u002F\u002Fflink.apache.org) - Fast, reliable, large-scale data processing engine.\n- [Apache Mahout](https:\u002F\u002Fmahout.apache.org) - Scalable algorithms focused on collaborative filtering, clustering and classification.\n- [DatumBox](http:\u002F\u002Fwww.datumbox.com) - Provides several algorithms and pre-trained models for natural language processing.\n- [Deeplearning4j](https:\u002F\u002Fdeeplearning4j.org) - Distributed and multi-threaded deep learning library.\n- [DJL](https:\u002F\u002Fdjl.ai) - High-level and engine-agnostic framework for deep learning.\n- [H2O ![c]](https:\u002F\u002Fwww.h2o.ai) - Analytics engine for statistics over big data.\n- [Intelligent java](https:\u002F\u002Fgithub.com\u002FBarqawiz\u002FIntelliJava) - Seamlessly integrate with remote deep learning and language models programmatically.\n- [JSAT](https:\u002F\u002Fgithub.com\u002FEdwardRaff\u002FJSAT) - Algorithms for pre-processing, classification, regression, and clustering with support for multi-threaded execution. (GPL-3.0-only)\n- [m2cgen](https:\u002F\u002Fgithub.com\u002FBayesWitnesses\u002Fm2cgen) - CLI tool to transpile models into native code.\n- [Neureka](https:\u002F\u002Fgithub.com\u002FGleethos\u002Fneureka) - A lightweight, platform independent, OpenCL accelerated nd-array\u002Ftensor library.\n- [oj! Algorithms](https:\u002F\u002Fwww.ojalgo.org\u002F) - High-performance mathematics, linear algebra and optimisation needed for data science, machine learning and scientific computing.\n- [Oryx 2](https:\u002F\u002Fgithub.com\u002FOryxProject\u002Foryx) - Framework for building real-time, large-scale machine learning applications. Includes end-to-end applications for collaborative filtering, classification, regression, and clustering.\n- [Siddhi](https:\u002F\u002Fgithub.com\u002Fsiddhi-io\u002Fsiddhi) - Cloud native streaming and complex event processing engine.\n- [Smile](https:\u002F\u002Fgithub.com\u002Fhaifengl\u002Fsmile) - Statistical Machine Intelligence and Learning Engine provides a set of machine learning algorithms and a visualization library.\n- [Tribuo](https:\u002F\u002Ftribuo.org\u002F) - Provides tools for classification, regression, clustering, model development and interfaces with other libraries such as scikit-learn, pytorch and TensorFlow.\n- [Weka](https:\u002F\u002Fwww.cs.waikato.ac.nz\u002Fml\u002Fweka\u002F) - Collection of algorithms for data mining tasks ranging from pre-processing to visualization. (GPL-3.0-only)\n\n### Messaging\n\n_Tools that help send messages between clients to ensure protocol independency._\n\n- [Aeron](https:\u002F\u002Fgithub.com\u002Freal-logic\u002FAeron) - Efficient, reliable, unicast and multicast message transport.\n- [Apache ActiveMQ](https:\u002F\u002Factivemq.apache.org) - Message broker that implements JMS and converts synchronous to asynchronous communication.\n- [Apache Camel](https:\u002F\u002Fcamel.apache.org) - Glues together different transport APIs via Enterprise Integration Patterns.\n- [Apache Kafka](https:\u002F\u002Fkafka.apache.org) - High-throughput distributed messaging system.\n- [Apache Pulsar](https:\u002F\u002Fpulsar.apache.org) - Distributed pub\u002Fsub-messaging system.\n- [Apache RocketMQ](https:\u002F\u002Frocketmq.apache.org) - Fast, reliable, and scalable distributed messaging platform.\n- [Apache Qpid](https:\u002F\u002Fqpid.apache.org) - Apache Qpid makes messaging tools that speak AMQP and support many languages and platforms.\n- [AutoMQ](https:\u002F\u002Fgithub.com\u002FAutoMQ\u002Fautomq-for-kafka) - AutoMQ is a cloud-native, serverless reinvented Kafka that is easily scalable, manage-less and cost-effective.\n- [Emissary](https:\u002F\u002Fgithub.com\u002Fjoel-jeremy\u002Femissary) - Simple, lightweight, yet FAST messaging library for decoupling messages (requests and events) and message handlers.\n- [EventBus](https:\u002F\u002Fgithub.com\u002Fgreenrobot\u002FEventBus) - Simple publish\u002Fsubscribe event bus.\n- [Hermes](http:\u002F\u002Fhermes.allegro.tech) - Fast and reliable message broker built on top of Kafka.\n- [JeroMQ](https:\u002F\u002Fgithub.com\u002Fzeromq\u002Fjeromq) - Implementation of ZeroMQ.\n- [Nakadi](https:\u002F\u002Fgithub.com\u002Fzalando\u002Fnakadi) - Provides a RESTful API on top of Kafka.\n- [RabbitMQ Java client](https:\u002F\u002Fgithub.com\u002Frabbitmq\u002Frabbitmq-java-client) - RabbitMQ client.\n- [Smack](https:\u002F\u002Fgithub.com\u002Figniterealtime\u002FSmack) - Cross-platform XMPP client library.\n- [NATS client](https:\u002F\u002Fgithub.com\u002Fnats-io\u002Fnats.java) - NATS client.\n\n### Microservice\n\n_Tools for creating and managing microservices._\n\n- [ActiveRPC](https:\u002F\u002Frpc.activej.io) - Lightweight and fast library for complex high-load distributed applications and Memcached-like solutions.\n- [Armeria](https:\u002F\u002Fgithub.com\u002Fline\u002Farmeria) - Asynchronous RPC\u002FREST client\u002Fserver library built on top of Java 8, Netty, HTTP\u002F2, Thrift and gRPC.\n- [consul-api](https:\u002F\u002Fgithub.com\u002FEcwid\u002Fconsul-api) - Client for the Consul API: a distributed, highly available and datacenter-aware registry\u002Fdiscovery service.\n- [Eureka](https:\u002F\u002Fgithub.com\u002FNetflix\u002Feureka) - REST-based service registry for resilient load balancing and failover.\n- [Helidon](https:\u002F\u002Fhelidon.io) - Two-style approach for writing microservices: Functional-reactive and as an implementation of MicroProfile.\n- [JDA](https:\u002F\u002Fgithub.com\u002FDV8FromTheWorld\u002FJDA) - Wrapping of the Discord REST API and its WebSocket events.\n- [KeenType](https:\u002F\u002Fgithub.com\u002FDaveJarvis\u002FKeenType) - Modernized version of a Java-based implementation of the New Typesetting System, which was heavily based on Donald E. Knuth's original TeX.\n- [kubernetes-client](https:\u002F\u002Fgithub.com\u002Ffabric8io\u002Fkubernetes-client) - Client provides access to the full Kubernetes & OpenShift REST APIs via a fluent DSL.\n- [Micronaut](https:\u002F\u002Fmicronaut.io) - Modern full-stack framework with focus on modularity, minimal memory footprint and startup time.\n- [Nacos](https:\u002F\u002Fnacos.io) - Dynamic service discovery, configuration and service management platform for building cloud native applications.\n- [OpenAI-Java](https:\u002F\u002Fgithub.com\u002FTheoKanning\u002Fopenai-java) - Java libraries for using OpenAI's GPT-3 API.\n- [Quarkus](https:\u002F\u002Fquarkus.io) - Kubernetes stack tailored for the HotSpot and Graal VM.\n- [Sentinel](https:\u002F\u002Fgithub.com\u002Falibaba\u002FSentinel) - Flow control component enabling reliability, resilience and monitoring for microservices.\n\n### Miscellaneous\n\n_Everything else._\n\n- [CQEngine](https:\u002F\u002Fgithub.com\u002Fnpgall\u002Fcqengine) - Ultra-fast, SQL-like queries on Java collections.\n- [Design Patterns](https:\u002F\u002Fgithub.com\u002Filuwatar\u002Fjava-design-patterns) - Implementation and explanation of the most common design patterns.\n- [FF4J](https:\u002F\u002Fgithub.com\u002Fff4j\u002Fff4j) - Feature Flags for Java.\n- [FizzBuzz Enterprise Edition](https:\u002F\u002Fgithub.com\u002FEnterpriseQualityCoding\u002FFizzBuzzEnterpriseEdition) - No-nonsense implementation of FizzBuzz made by serious businessmen for serious business purposes. (No explicit license)\n- [IP2Location.io Java SDK](https:\u002F\u002Fgithub.com\u002Fip2location\u002Fip2location-io-java) - Wrapper for the IP2Location.io Geolocation API and the IP2WHOIS domain WHOIS API.\n- [ISBN core](https:\u002F\u002Fgithub.com\u002Fladutsko\u002Fisbn-core) - A small library that contains a representation object of ISBN-10 and ISBN-13 and tools to parse, validate and format one.\n- [J2ObjC](https:\u002F\u002Fgithub.com\u002Fgoogle\u002Fj2objc) - Java-to-Objective-C translator for porting Android libraries to iOS.\n- [JBake](https:\u002F\u002Fjbake.org) - Static website generator.\n- [JBang](https:\u002F\u002Fwww.jbang.dev\u002F) - JBang makes it easy to use Java for scripting. It lets you use a single file for code and dependency management and allows you to run it directly.\n- [JBot](https:\u002F\u002Fgithub.com\u002Frampatra\u002Fjbot) - Framework for building chatbots. (GPL-3.0-only)\n- [JCuda](http:\u002F\u002Fjcuda.org) - JCuda offers Java bindings for CUDA and CUDA-related libraries.\n- [JEmoji](https:\u002F\u002Fgithub.com\u002Ffelldo\u002FJEmoji) - An auto-generated emoji library that provides type-safe direct access to emojis and alias support for Discord, Slack, GitHub and many more features.\n- [Jimfs](https:\u002F\u002Fgithub.com\u002Fgoogle\u002Fjimfs) - In-memory file system.\n- [JObfuscator![c]](https:\u002F\u002Fwww.pelock.com\u002Fproducts\u002Fjobfuscator) - Source code obfuscator.\n- [Joda-Money](https:\u002F\u002Fwww.joda.org\u002Fjoda-money\u002F) - Basic currency and money classes and algorithms not provided by the JDK.\n- [jOOX](https:\u002F\u002Fgithub.com\u002Fjooq\u002Fjoox) - Simple wrapper for the org.w3c.dom package, to allow for fluent XML document creation and manipulation with an API inspired by jQuery.\n- [JPad](http:\u002F\u002Fjpad.io) - Snippet runner.\n- [jsweet](https:\u002F\u002Fgithub.com\u002Fcincheo\u002Fjsweet) - Source transpiler to TypeScript\u002FJavaScript.\n- [Maven Wrapper](https:\u002F\u002Fgithub.com\u002Ftakari\u002Fmaven-wrapper) - Analogue of Gradle Wrapper for Maven, allows building projects without installing maven.\n- [Membrane Service Proxy](https:\u002F\u002Fgithub.com\u002Fmembrane\u002Fservice-proxy) - Open-source, reverse-proxy framework.\n- [MinimalFTP](https:\u002F\u002Fgithub.com\u002FGuichaguri\u002FMinimalFTP) - Lightweight, small and customizable FTP server.\n- [LittleProxy](https:\u002F\u002Fgithub.com\u002Fadamfisk\u002FLittleProxy) - High performance HTTP proxy atop Netty's event-based networking library.\n- [Modern Java - A Guide to Java 8](https:\u002F\u002Fgithub.com\u002Fwinterbe\u002Fjava8-tutorial) - Popular Java 8 guide.\n- [Modernizer](https:\u002F\u002Fgithub.com\u002Fgaul\u002Fmodernizer-maven-plugin) - Detect uses of legacy Java APIs.\n- [Nyagram](https:\u002F\u002Fgithub.com\u002Fkaleert\u002Fnyagram) - Reactive, type-safe framework for Telegram bots based on Spring Boot 3 and Java 21.\n- [OctoLinker](https:\u002F\u002Fgithub.com\u002FOctoLinker\u002FOctoLinker) - Browser extension which allows to navigate through code on GitHub more efficiently.\n- [OpenRefine](http:\u002F\u002Fopenrefine.org) - Tool for working with messy data: cleaning, transforming, extending it with web services and linking it to databases.\n- [PipelinR](https:\u002F\u002Fgithub.com\u002Fsizovs\u002Fpipelinr) - Small utility library for using ","awesome-java 是一个精心整理的 Java 框架、库和软件列表。该项目涵盖了从架构设计到机器学习等多个领域的优秀资源，旨在帮助开发者快速找到适用于特定需求的最佳工具。其核心功能包括但不限于依赖注入、数据库操作、微服务构建等，并且还涉及一些前沿技术领域如人工智能和区块链。适合于任何使用 Java 进行开发的场景，无论是初学者寻找学习资料还是经验丰富的工程师探索新技术栈，都能从中受益。",2,"2026-06-06 02:40:03","top_all"]