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Java通用基础组件汇总列表
https://github.com/wangchongjie/awesome-java
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Java通用基础组件汇总列表
Host: GitHub
URL: https://github.com/wangchongjie/awesome-java
Owner: wangchongjie
Created: 2016-08-11T12:01:38.000Z (about 8 years ago)
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- Readme: README.md
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ultimate-awesome - awesome-java - Java通用基础组件汇总列表. (Other Lists / PowerShell Lists)
README

        
# Awesome Java [![Awesome](https://cdn.rawgit.com/sindresorhus/awesome/d7305f38d29fed78fa85652e3a63e154dd8e8829/media/badge.svg)](https://github.com/sindresorhus/awesome)

# Java通用基础框架、组件、库、软件汇总列表 [持续更新]

A curated list of awesome Java frameworks, libraries and software. 

- [Awesome Java](#awesome-java)

    - [Ancients](#ancients) [由来已久的]

    - [Bean Mapping](#bean-mapping) [Bean映射]

    - [Build](#build) [构建]

    - [Bytecode Manipulation](#bytecode-manipulation) [字节码操作]

    - [Caching](#caching) [缓存]

    - [Cluster Management](#cluster-management) [集群管理]

    - [Code Analysis](#code-analysis) [代码分析]

    - [Code Coverage](#code-coverage) [代码覆盖]

    - [Command-line Argument Parsers](#command-line-argument-parsers) [命令行参数解析]

    - [Compiler-compiler](#compiler-compiler) [内嵌编译器]

    - [Configuration](#configuration) [配置相关]

    - [Constraint Satisfaction Problem Solver](#constraint-satisfaction-problem-solver) [优化解决问题]

    - [Continuous Integration](#continuous-integration) [持续集成]

    - [CSV](#csv) [CSV]

    - [Data structures](#data-structures) [数据结构]

    - [Database](#database) [数据库]

    - [Date and Time](#date-and-time) [日期和时间]

    - [Dependency Injection](#dependency-injection) [依赖注入]

    - [Development](#development) [开发]

    - [Distributed Applications](#distributed-applications) [分布式应用]

    - [Distributed Databases](#distributed-databases) [分布式数据库]

    - [Distribution](#distribution) [原生分布式]

    - [Document Processing](#document-processing) [文档处理]

    - [Formal Verification](#formal-verification) [格式校验]

    - [Functional Programming](#functional-programming) [函数式编程]

    - [Game Development](#game-development) [游戏开发]

    - [Geospatial](#geospatial) [地理空间]

    - [GUI](#gui) [图形用户界面]

    - [High Performance](#high-performance) [高性能计算]

    - [IDE](#ide) [开发工具]

    - [Imagery](#imagery) [图形处理]

    - [JSON Processing](#json-processing) [JSON处理]

    - [JSON](#json) [JSON]

    - [JVM and JDK](#jvm-and-jdk) [JVM和JDK]

    - [Logging](#logging) [日志]

    - [Machine Learning](#machine-learning) [机器学习]

    - [Messaging](#messaging) [消息组件]

    - [Miscellaneous](#miscellaneous) [混杂的]

    - [Monitoring](#monitoring) [监控 ]

    - [Native](#native) [系统库交互]

    - [Natural Language Processing](#natural-language-processing) [自然语言处理]

    - [Networking](#networking) [网络]

    - [ORM](#orm) [对象关系映射]

    - [PDF](#pdf) [PDF]

    - [Performance analysis](#performance-analysis) [性能分析]

    - [Platform](#platform) [平台]

    - [Reactive libraries](#reactive-libraries) [响应式编程库]

    - [REST Frameworks](#rest-frameworks) [REST框架]

    - [Science](#science) [科学计算]

    - [Search](#search) [搜索]

    - [Security](#security) [安全]

    - [Serialization](#serialization) [序列化]

    - [Server](#server) [服务器]

    - [Template Engine](#template-engine) [模板引擎]

    - [Testing](#testing) [测试]

    - [Utility](#utility) [工具类]

    - [Web Crawling](#web-crawling) [网络爬虫]

    - [Web Frameworks](#web-frameworks) [网络框架]

- [Resources](#resources)

    - [Communities](#communities) [委员会]

    - [Frontends](#frontends) [前端]

    - [Influential Books](#influential-books) [有影响力的书]

    - [Podcasts](#podcasts) [播客]

    - [Twitter](#twitter) [Twitter]

    - [Websites](#websites) [网站]

- [Contributing](#contributing)

## Ancients

[由来已久的]

*In existence since the beginning of time and which will continue being used long after the hype has waned.*

* [Apache Ant](http://ant.apache.org/) - Build process management with XML.

* [Apache Hadoop](http://hadoop.apache.org/) - Storage and large-scale processing of data-sets on clusters of commodity hardware.

* [Apache OpenNLP](https://opennlp.apache.org/) - Toolkit for common tasks like tokenization.

* [Apache Velocity](http://velocity.apache.org/) - Templates for HTML pages, emails or source code generation in general.

* [FreeMarker](http://freemarker.org/) - General templating engine without any heavyweight or opinionated dependencies.

* [GlassFish](https://glassfish.java.net/) - Application server and reference implementation for Java EE sponsored by Oracle.

* [GWT](http://www.gwtproject.org/) - Toolbox which includes a Java-to-JavaScript compiler for client-side code, XML parser, API for RPC, JUnit integration, internationalization support and widgets for the GUI.

* [HornetQ](http://hornetq.jboss.org/) - Clear, concise, modular and made to be embedded.

* [Hudson](http://hudson-ci.org/) - Continuous integration server still in active development.

* [Java Modeling Language (JML)](http://www.eecs.ucf.edu/~leavens/JML/) - Behavioral interface specification language that can be used to specify the behavior of code modules. It combines the design by contract approach of Eiffel and the model-based specification approach of the Larch family of interface specification languages, with some elements of the refinement calculus. Used by several other verification tools.

* [JavaCC](https://javacc.java.net/) - More specific and slightly easier to learn. Has syntactic lookahead.

* [JavaServer Faces](https://javaserverfaces.java.net/) - Oracle's open-source implementation of the JSF standard, Mojarra.

* [JavaServer Pages](https://jsp.java.net/) - Common templating for websites with custom tag libraries.

* [JUnit](http://junit.org/) - Common testing framework.

* [Launch4j](http://launch4j.sourceforge.net/) - Wraps JARs in lightweight and native Windows executables.

* [Quartz](https://github.com/quartz-scheduler/quartz) - Open-source job scheduler library with Apache 2.0 license.

* [TestNG](http://testng.org/) - Testing framework.

* [Trove](http://trove.starlight-systems.com/) - Primitive collections.

## Bean Mapping 

[Bean映射]

*Frameworks that ease bean mapping.*

* [Dozer](https://github.com/DozerMapper/dozer/) - Mapper that copies data from one object to another, using annotations, API or XML configuration.

* [JMapper](http://jmapper-framework.github.io/jmapper-core/) - Using byte code manipulation for lightning fast mapping. Supporting annotations, API or XML configuration.

* [MapStruct](https://github.com/mapstruct/mapstruct) - Code generator which simplifies mappings between different bean types, based on a convention over configuration approach.

* [ModelMapper](https://github.com/jhalterman/modelmapper) - ModelMapper is an intelligent object mapping library that automatically maps objects to each other.

* [Orika](https://github.com/orika-mapper/orika) - Orika is a Java Bean mapping framework that recursively copies (among other capabilities) data from one object to another.

* [Selma](https://github.com/xebia-france/selma) - Stupid Simple Statically Linked Mapper. Selma is an Annotation Processor Based bean mapper.

## Build 

[构建]

*Tools which handle the build cycle and dependencies of an application.*

* [Apache Maven](http://maven.apache.org/) - Declarative build and dependency management which favors convention over configuration. It might be preferable to Apache Ant which uses a rather procedural approach and can be difficult to maintain.

* [Bazel](http://bazel.io) - Build tool from Google that builds code quickly and reliably.

* [Gradle](http://gradle.org/) - Incremental builds which are programmed via Groovy instead of declaring XML. Works well with Maven's dependency management.

## Bytecode Manipulation 

[字节码操作]

*Libraries to manipulate bytecode programmatically.*

* [ASM](http://asm.ow2.org/) - All purpose, low level, bytecode manipulation and analysis.

* [Byte Buddy](http://bytebuddy.net/) - Further simplifies bytecode generation with a fluent API.

* [Byteman](http://byteman.jboss.org/) - Manipulate bytecode at runtime via DSL (rules) mainly for testing/troubleshooting.

* [cglib](https://github.com/cglib/cglib) - Bytecode generation library.

* [Javassist](http://jboss-javassist.github.io/javassist/) - Tries to simplify the editing of bytecode.

## Caching 

[缓存]

*Libraries which provide caching facilities.*

* [Caffeine](https://github.com/ben-manes/caffeine) - High performance, near optimal caching library.

* [Ehcache](http://www.ehcache.org/) - Distributed general purpose cache.

## Cluster Management 

[集群管理]

*Frameworks which can dynamically manage applications inside of a cluster.*

* [Apache Aurora](http://aurora.apache.org/) - Apache Aurora is a Mesos framework for long-running services and cron jobs.

* [Apache Mesos](http://mesos.apache.org/) -  Abstracts CPU, memory, storage, and other compute resources away from machines.

* [Singularity](http://getsingularity.com/) - Singularity is a Mesos framework that makes deployment and operations easy. It supports web services, background workers, scheduled jobs, and one-off tasks.

## Code Analysis 

[代码分析]

*Tools that provide metrics and quality measurements.*

* [Checkstyle](https://github.com/checkstyle/checkstyle) - Static analysis of coding conventions and standards.

* [Codacy](https://www.codacy.com) - Continuous static analysis, code coverage, and software metrics to automate code reviews.

* [Error Prone](https://github.com/google/error-prone) - Catches common programming mistakes as compile-time errors.

* [FindBugs](http://findbugs.sourceforge.net/) - Static analysis of bytecode to find potential bugs.

* [jQAssistant](http://jqassistant.org/) - Static code analysis with Neo4J-based query language.

* [PMD](https://github.com/pmd/pmd) - Source code analysis for finding bad coding practices.

* [SonarQube](http://www.sonarqube.org/) - Integrates other analysis components via plugins and provides an overview of the metrics over time.

## Code Coverage 

[代码覆盖]

*Frameworks and tools that enable collection of code coverage metrics for test suites.*

* [Clover](https://www.atlassian.com/software/clover/overview) - Proprietary code coverage tool by Atlassian that relies on source-code instrumentation, instead of bytecode instrumentation.

* [Cobertura](http://cobertura.github.io/cobertura/) - Relies on offline (or static) bytecode instrumentation and class loading to collect code coverage metrics; GPLv2 licensed.

* [JaCoCo](http://eclemma.org/jacoco/) - Framework that enables collection of code coverage metrics, using both offline and runtime bytecode instrumentation; prominently used by EclEmma, the Eclipse code-coverage plugin.

## Command-line Argument Parsers 

[命令行参数解析]

*Libraries that make it easy to parse command line options, arguments, etc.*

* [args4j](http://args4j.kohsuke.org/) - Small library to parse command like arguments similar to javac.

* [JCommander](http://jcommander.org/) - Command line arguments parsing framework with custom types and validation via implementing interfaces.

* [JOpt Simple](http://pholser.github.io/jopt-simple/) - Simple parser that uses the POSIX getopt() and GNU getopt_long() syntaxes. Does not use annotations, uses a fluent API instead.

## Compiler-compiler 

[内嵌编译器]

*Frameworks that help to create parsers, interpreters or compilers.*

* [ANTLR](http://www.antlr.org/) - Complex full-featured framework for top-down parsing.

* [JFlex](http://jflex.de/) - A lexical analyzer generator.

## Configuration 

[配置相关]

*Libraries that provide external configuration.*

* [config](https://github.com/typesafehub/config) - Configuration library for JVM languages.

* [owner](https://github.com/lviggiano/owner) - Reduces boilerplate of properties.

## Constraint Satisfaction Problem Solver 

[优化解决问题]

*Libraries that help on implementing optimization and satisfiability problems.*

* [Choco](http://choco-solver.org/) - Off-the-shelf constraint satisfaction problem solver, which uses constraint programming techniques.

* [JaCoP](https://github.com/radsz/jacop/) - Includes an interface for the FlatZinc language, enabling it to execute MiniZinc models.

* [OptaPlanner](http://www.optaplanner.org/) - Business planning and resource scheduling optimization solver.

## Continuous Integration 

[持续集成]

*Tools which support continuously building, testing and releasing applications.*

* [Bamboo](https://www.atlassian.com/software/bamboo) - Atlassian's solution with good integration of their other products. You can either apply for an open-source license or buy it.

* [fabric8](http://fabric8.io/) - Integration platform for containers.

* [Go](https://www.thoughtworks.com/go/) - ThoughtWork's open-source solution.

* [Jenkins](http://jenkins-ci.org/) - Provides server-based deployment services.

* [TeamCity](http://www.jetbrains.com/teamcity/) - JetBrain's CI solution with a free version.

* [Travis](https://travis-ci.org) - Hosted service often used for open-source projects.

## CSV 

[CSV]

*Frameworks and libraries that simplify reading/writing CSV data.*

* [opencsv](http://opencsv.sourceforge.net) - Simple CSV parser with a commercial-friendly license.

* [Super CSV](http://super-csv.github.io/super-csv/) - Powerful CSV parser with support for Dozer, Joda-Time and Java 8.

* [uniVocity-parsers](https://github.com/uniVocity/univocity-parsers) - One of the fastest and most feature-complete CSV. Also comes with parsers for TSV and fixed width records.

## Database 

[数据库]

*Everything which simplifies interactions with the database.*

* [Apache Hive](https://hive.apache.org/) - Data warehouse infrastructure built on top of Hadoop.

* [Apache Phoenix](http://phoenix.apache.org/) - High performance relational database layer over HBase for low latency applications.

* [Chronicle Map](https://github.com/OpenHFT/Chronicle-Map) - Efficient in-memory (opt. persisted to disk) off-heap key-value store.

* [eXist](https://github.com/eXist-db/exist) - A NoSQL document database and application platform.

* [FlexyPool](https://github.com/vladmihalcea/flexy-pool) - Brings metrics and failover strategies to the most common connection pooling solutions.

* [Flyway](https://flywaydb.org/) - Simple database migration tool.

* [H2](http://h2database.com/) - Small SQL Database notable for its in-memory functionality.

* [HikariCP](https://github.com/brettwooldridge/HikariCP) - High performance JDBC connection pool.

* [JDBI](http://jdbi.org/) - Convenient abstraction of JDBC.

* [Jedis](https://github.com/xetorthio/jedis) - A small client for interaction with redis, with methods for commands.

* [jOOQ](http://www.jooq.org/) - Generates typesafe code based on SQL schema.

* [Liquibase](http://www.liquibase.org/) - Database-independent library for tracking, managing and applying database schema changes.

* [MapDB](http://www.mapdb.org/) - Embedded database engine that provides concurrent collections backed on disk or in off-heap memory.

* [Presto](https://github.com/prestodb/presto) - Distributed SQL query engine for big data.

* [Querydsl](http://www.querydsl.com/) - Typesafe unified queries.

* [Realm](https://github.com/realm/realm-java) - Mobile database to run directly inside phones, tablets or wearables.

* [Redisson](https://github.com/mrniko/redisson) - Allows for distributed and scalable data structures on top of a Redis server.

* [Speedment](https://github.com/speedment/speedment) - A database access library that utilizes the Java 8 Stream API for querying.

* [Vibur DBCP](http://www.vibur.org/) - JDBC connection pool library which offers advanced performance monitoring capabilities.

## Data structures 

[数据结构]

*Efficient and specific data structures.*

* [Apache Avro](https://avro.apache.org/) - Data interchange format featuring among others: dynamic typing, untagged data, absence of manually assigned IDs.

* [Apache Orc](https://orc.apache.org/) - Fast and efficient columnar storage format for hadoop based workloads.

* [Apache Parquet](http://parquet.apache.org/) - Columnar storage format based on assembly algorithms from the Dremel paper by Google.

* [Apache Thrift](https://thrift.apache.org/) - Data interchange format that originated at Facebook.

* [Persistent Collection](http://pcollections.org/) - Persistent and immutable analogue of the Java Collections Framework.

* [Protobuf](https://github.com/google/protobuf) - Google's data interchange format.

* [SBE](https://github.com/real-logic/simple-binary-encoding) - Simple Binary Encoding, one of the fastest message formats around.

* [Wire](https://github.com/square/wire) - Clean, lightweight protocol buffers.

## Date and Time 

[日期和时间]

*Libraries related to handling date and time.*

* [Almanac Converter](https://github.com/hypotemoose/almanac-converter) - Simple conversion between different calendar systems.

* [Joda-Time](http://www.joda.org/joda-time/) - De facto standard date/time-library before Java 8.

* [ThreeTenBP](https://github.com/ThreeTen/threetenbp) - Port of JSR 310 (java.time package) by the author of Joda-Time.

* [Time4J](https://github.com/MenoData/Time4J) - Advanced date and time library.

## Dependency Injection 

[依赖注入]

*Libraries that help to realize the [Inversion of Control](https://en.wikipedia.org/wiki/Inversion_of_control) paradigm.*

* [Apache DeltaSpike](https://deltaspike.apache.org/) - CDI extension framework.

* [Dagger2](http://google.github.io/dagger/) - Compile-time injection framework without reflection.

* [Guice](https://github.com/google/guice) - Lightweight but powerful framework that completes Dagger.

* [HK2](https://hk2.java.net) - Light-weight and dynamic dependency injection framework.

## Development 

[开发]

*Augmentation of the development process at a fundamental level.*

* [ADT4J](https://github.com/sviperll/adt4j) - JSR-269 code generator for algebraic data types.

* [AspectJ](https://eclipse.org/aspectj/) - Seamless aspect-oriented programming extension.

* [Auto](https://github.com/google/auto) - Collection of source code generators.

* [DCEVM](http://dcevm.github.io/) - Modification of the JVM that allows unlimited redefinition of loaded classes at runtime.

* [HotswapAgent](https://github.com/HotswapProjects/HotswapAgent) - Unlimited runtime class and resource redefinition.

* [Immutables](http://immutables.github.io/) - Scala-like case classes.

* [JHipster](https://github.com/jhipster/generator-jhipster) - Yeoman source code generator to create applications based on Spring Boot and AngularJS.

* [JRebel](http://zeroturnaround.com/software/jrebel/) - Commercial software that instantly reloads code and configuration changes without redeploys.

* [Lombok](https://projectlombok.org/) - Code-generator which aims to reduce the verbosity.

* [Spring Loaded](https://github.com/spring-projects/spring-loaded) - Class reloading agent.

## Distributed Applications 

[分布式应用]

*Libraries and frameworks for writing distributed and fault-tolerant applications.*

* [Akka](http://akka.io) - Toolkit and runtime for building concurrent, distributed, and fault tolerant event-driven applications.

* [Apache Storm](http://storm.apache.org/) - Realtime computation system.

* [Apache ZooKeeper](http://zookeeper.apache.org/) - Coordination service with distributed configuration, synchronization, and naming registry for large distributed systems.

* [Atomix](http://atomix.io/atomix/) - Fault-tolerant distributed coordination framework.

* [Axon Framework](http://www.axonframework.org/) - Framework for creating CQRS applications.

* [Copycat](http://atomix.io/copycat/) - Fault-tolerant state machine replication framework.

* [Hazelcast](http://hazelcast.org/) - Highly scalable in-memory datagrid.

* [Hystrix](https://github.com/Netflix/Hystrix) - Provides latency and fault tolerance.

* [JGroups](http://www.jgroups.org/) - Toolkit for reliable messaging and creating clusters.

* [Lagom](https://www.lightbend.com/lagom) - Framework for creating microservice-based systems.

* [Orbit](http://www.orbit.cloud/) - Virtual Actors, adding another level of abstraction to traditional actors.

* [Quasar](http://www.paralleluniverse.co/quasar/) - Lightweight threads and actors for the JVM.

## Distributed Databases 

[分布式数据库]

*Databases in a distributed system that appear to applications as a single data source.*

* [Apache Cassandra](http://cassandra.apache.org) - Column-oriented and providing high availability with no single point of failure.

* [Apache HBase](http://hbase.apache.org) - Hadoop database for big data.

* [Druid](http://druid.io) - Real-time and historical OLAP data store that excel at aggregation and approximation queries.

* [Infinispan](http://infinispan.org/) - Highly concurrent key/value datastore used for caching.

* [OpenTSDB](http://opentsdb.net) - Scalable and distributed time series database written on top of Apache HBase.

## Distribution 

[原生分布式]

*Tools which handle the distribution of applications in native formats.*

* [Bintray](https://bintray.com/) - Version control for binaries which handles the publishing. Can also be used with Maven or Gradle and has a free plan for open-source software or several business plans.

* [Boxfuse](https://boxfuse.com) - Deployment of JVM application to AWS using the principles of Immutable Infrastructure.

* [Capsule](http://www.capsule.io/) - Simple and powerful packaging and deployment. A fat JAR on steroids or a "Docker for Java" that supports JVM-optimized containers.

* [Central Repository](http://search.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.

* [IzPack](http://izpack.org/) - Setup authoring tool for cross-platform deployments.

* [JitPack](https://jitpack.io/) - Easy to use package repository for GitHub. Builds Maven/Gradle projects on demand and publishes ready-to-use packages.

* [Nexus](http://www.sonatype.com/nexus/solution-overview) - Binary management with proxy and caching capabilities.

* [packr](https://github.com/libgdx/packr/) - Packs JARs, assets and the JVM for native distribution on Windows, Linux and Mac OS X.

## Document Processing 

[文档处理]

*Libraries that assist with processing office document formats.*

* [Apache POI](http://poi.apache.org/) - Supports OOXML (XLSX, DOCX, PPTX) as well as OLE2 (XLS, DOC or PPT).

* [documents4j](http://documents4j.com) - API for document format conversion using third-party converters such as MS Word.

* [docx4j](http://www.docx4java.org/trac/docx4j) - Creating and manipulating Microsoft Open XML files.

## Formal Verification 

[格式校验]

*Formal-methods tools: proof assistants, model checking, symbolic execution etc.*

* [CATG](https://github.com/ksen007/janala2) - Concolic unit testing engine. Automatically generates unit tests using formal methods.

* [Checker Framework](http://types.cs.washington.edu/checker-framework/) - Pluggable type systems. Includes nullness types, physical units, immutability types and more.

* [Daikon](http://plse.cs.washington.edu/daikon/) - Daikon detects likely program invariants and can generate JML specs based on those invariats.

* [Java Path Finder (JPF)](http://babelfish.arc.nasa.gov/trac/jpf) - JVM formal verification tool containing a model checker and more. Created by NASA.

* [JMLOK 2.0](http://massoni.computacao.ufcg.edu.br/home/jmlok) - Detects nonconformances between code and JML specification through the feedback-directed random tests generation, and suggests a likely cause for each nonconformance detected.

* [KeY](http://key-project.org/) - The KeY System is a 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.

* [OpenJML](http://openjml.github.io/) - Translates JML specifications into SMT-LIB format and passes the proof problems implied by the program to backend solvers.

## Functional Programming 

[函数式编程]

*Libraries that facilitate functional programming.*

* [cyclops-react](https://github.com/aol/cyclops-react) - Monad and stream utilities, comprehensions, pattern matching, functional extensions for all JDK collections, future streams, trampolines and much more.

* [derive4j](https://github.com/derive4j/derive4j) - Java 8 annotation processor and framework for deriving algebraic data types constructors, pattern-matching, morphisms.

* [Fugue](https://bitbucket.org/atlassian/fugue) - Functional extensions to Guava.

* [Functional Java](http://www.functionaljava.org) - Implements numerous basic and advanced programming abstractions that assist composition-oriented development.

* [Javaslang](http://www.javaslang.io/) - Functional component library that provides persistent data types and functional control structures.

* [jOOλ](https://github.com/jOOQ/jOOL) - Extension to Java 8 which aims to fix gaps in lambda, providing numerous missing types and a rich set of sequential Stream API additions.

## Game Development 

[游戏开发]

*Frameworks that support the development of games.*

* [jMonkeyEngine](https://jmonkeyengine.org/) - Game engine for modern 3D development.

* [libGDX](https://libgdx.badlogicgames.com/) - All-round cross-platform, high-level framework.

* [LWJGL](https://www.lwjgl.org/) - Robust framework that abstracts libraries like OpenGL/CL/AL.

## Geospatial 

[地理空间]

*Libraries for working with geospatial data and algorithms.*

* [Apache SIS](http://sis.apache.org/) - Library for developing geospatial applications.

* [Geo](https://github.com/davidmoten/geo/) - GeoHash utilities in Java.

* [Geotoolkit.org](http://www.geotoolkit.org/) - Library for developing geospatial applications. Built on top of the Apache SIS project.

* [GeoTools](http://geotools.org/) - Library that provides tools for geospatial data.

* [H2GIS](http://www.h2gis.org/) - A spatial extension of the H2 database.

* [Jgeohash](http://astrapi69.github.io/jgeohash/) - Library that can assist Java developers in using the GeoHash algorithm.

* [Mapsforge](https://github.com/mapsforge/mapsforge/) - Software for the rendering of maps based on OpenStreetMap data.

* [Spatial4j](https://github.com/locationtech/spatial4j/) - General purpose spatial/geospatial ASL licensed open-source Java library.

## GUI 

[图形用户界面]

*Libraries to create modern graphical user interfaces.*

* [JavaFX](http://www.oracle.com/technetwork/java/javase/overview/javafx-overview-2158620.html) - The successor of Swing.

* [Scene Builder](http://gluonhq.com/open-source/scene-builder/) - Visual layout tool for JavaFX applications.

* [SWT](http://www.eclipse.org/swt/) - The Standard Widget Toolkit (SWT) is a graphical widget toolkit for use with the Java platform.

## High Performance 

[高性能计算]

*Everything about high performance computation, from collections to specific libraries.*

* [Agrona](https://github.com/real-logic/Agrona) - Data structures and utility methods that are common in high-performance applications.

* [Disruptor](http://lmax-exchange.github.io/disruptor/) - Inter-thread messaging library.

* [fastutil](http://fastutil.di.unimi.it/) - Fast and compact type-specific collections.

* [GS Collections](https://github.com/goldmansachs/gs-collections) - Collection framework inspired by Smalltalk.

* [HPPC](http://labs.carrotsearch.com/hppc.html) - Primitive collections.

* [JCTools](https://github.com/JCTools/JCTools) - Concurrency tools currently missing from the JDK.

* [Koloboke](https://github.com/OpenHFT/Koloboke) - Hash sets and hash maps.

## IDE 

[开发工具]

*Integrated development environments that try to simplify several aspects of development.*

* [Eclipse](http://www.eclipse.org/) - Established, open-souce project with support for lots of plugins and languages.

* [IntelliJ IDEA](http://www.jetbrains.com/idea/) - Supports a lot of JVM languages and provides good options for Android development. The commercial edition targets the enterprise sector.

* [NetBeans](https://netbeans.org/) - Provides integration for several Java SE and EE features from database access to HTML5.

## Imagery 

[图形处理]

*Libraries that assist with the creation, evaluation or manipulation of graphical images.*

* [Imgscalr](https://github.com/thebuzzmedia/imgscalr) - Simple and efficient hardware-accelerated image-scaling library implemented in pure Java 2D.

* [Thumbnailator](https://github.com/coobird/thumbnailator) - Thumbnailator is a high-quality thumbnail generation library for Java.

* [TwelveMonkeys](https://github.com/haraldk/TwelveMonkeys) - Collection of plugins which extend the number of supported image file formats.

* [ZXing](https://github.com/zxing/zxing) - Multi-format 1D/2D barcode image processing library.

## JSON 

[JSON]

*Libraries for serializing and deserializing JSON to and from Java objects.*

* [Genson](http://owlike.github.io/genson/) - Powerful and easy to use Java to JSON conversion library.

* [Gson](https://github.com/google/gson) - Serializes objects to JSON and vice versa. Good performance with on-the-fly usage.

* [Jackson](http://wiki.fasterxml.com/JacksonHome) - Similar to GSON but has performance gains if you need to instantiate the library more often.

* [Jackson-datatype-money](https://github.com/zalando/jackson-datatype-money) - Open-source Jackson module to support JSON serialization and deserialization of JavaMoney data types.

* [JSON-io](https://github.com/jdereg/json-io) - Convert Java to JSON. Convert JSON to Java. Pretty print JSON. Java JSON serializer.

* [LoganSquare](https://github.com/bluelinelabs/LoganSquare) - JSON parsing and serializing library based on Jackson's streaming API. Outperforms GSON & Jackson's library.

## JSON Processing 

[JSON处理]

*Libraries for processing data in JSON format.*

* [fastjson](https://github.com/alibaba/fastjson) - Very fast processor with no additional dependencies and full data binding.

* [Jolt](https://github.com/bazaarvoice/jolt) - JSON to JSON transformation tool.

* [JsonPath](https://github.com/jayway/JsonPath) - Extract data from JSON using XPATH like syntax.

* [JsonSurfer](https://github.com/jsurfer/JsonSurfer) - Streaming JsonPath processor dedicated to processing big and complicated JSON data.

## JVM and JDK 

[JVM和JDK]

*Current implementations of the JVM/JDK.*

* [Avian](https://github.com/ReadyTalk/avian) - JVM with both a JIT & AOT modes. Includes an iOS port.

* [JDK 9](https://jdk9.java.net/) - Early access releases of JDK 9.

* [OpenJDK](http://openjdk.java.net/) - Open-source implementation for Linux.

* [ParparVM](https://github.com/codenameone/CodenameOne/tree/master/vm) - VM with non-blocking concurrent GC for iOS.

* [Zulu OpenJDK 9](http://zulu.org/zulu-9-pre-release-downloads/) - Early access OpenJDK 9 builds for Windows, Linux, and Mac OS X.

* [Zulu OpenJDK](http://www.azul.com/downloads/zulu/) - OpenJDK builds for Windows, Linux, and Mac OS X through Java 8.

## Logging 

[日志]

*Libraries that log the behavior of an application.*

* [Apache Log4j 2](http://logging.apache.org/log4j/) - Complete rewrite with a powerful plugin and configuration architecture.

* [Graylog](https://www.graylog.org/) - Open-source aggregator suited for extended role and permission management.

* [Kibana](https://www.elastic.co/products/kibana) - Analyzes and visualizes log files. Some features require payment.

* [Logback](http://logback.qos.ch/) - Robust logging library with interesting configuration options via Groovy.

* [Logbook](https://github.com/zalando/logbook) - Extensible, open-source library for HTTP request and response logging.

* [Logstash](https://www.elastic.co/products/logstash) - Tool for managing log files.

* [SLF4J](http://www.slf4j.org/) - Abstraction layer which is to be used with an implementation.

* [tinylog](http://www.tinylog.org/) - Lightweight logging framework with static logger class.

## Machine Learning 

[机器学习]

*Tools that provide specific statistical algorithms which allow learning from data.*

* [Apache Flink](https://flink.apache.org/) - Fast and reliable large-scale data processing engine.

* [Apache Mahout](https://mahout.apache.org/) - Scalable algorithms focused on collaborative filtering, clustering and classification.

* [Apache Spark](http://spark.apache.org/) - Data analytics cluster computing framework.

* [DeepDive](http://deepdive.stanford.edu) - Creates structured information from unstructured data and integrates it into an existing database.

* [Deeplearning4j](http://deeplearning4j.org/) - Distributed and multi-threaded deep learning library.

* [H2O](http://www.h2o.ai/) - Analytics engine for statistics over big data.

* [JSAT](https://github.com/EdwardRaff/JSAT) - Algorithms for pre-processing, classification, regression, and clustering with support for multi-threaded execution.

* [Oryx 2](https://github.com/OryxProject/oryx) - A framework for building real-time large scale machine learning applications, which also includes end-to-end applications for collaborative filtering, classification, regression, and clustering.

* [Smile](http://haifengl.github.io/smile/) - The Statistical Machine Intelligence and Learning Engine provides a set of machine learning algorithms and a visualization library.

* [Weka](http://www.cs.waikato.ac.nz/ml/weka/) - Collection of algorithms for data mining tasks ranging from pre-processing to visualization.

## Messaging 

[消息组件]

*Tools that help to send messages between clients in order to ensure protocol independency.*

* [Aeron](https://github.com/real-logic/Aeron) - Efficient reliable unicast and multicast message transport.

* [Apache ActiveMQ](http://activemq.apache.org/) - Message broker that implements JMS and converts synchronous to asynchronous communication.

* [Apache Camel](http://camel.apache.org/) - Glues together different transport APIs via Enterprise Integration Patterns.

* [Apache Kafka](http://kafka.apache.org/) - High-throughput distributed messaging system.

* [Hermes](http://hermes.allegro.tech) - Fast and reliable message broker built on top of Kafka.

* [Nakadi](https://github.com/zalando/nakadi) - Provides a RESTful API on top of Kafka.

* [JeroMQ](https://github.com/zeromq/jeromq) - Implementation of ZeroMQ.

* [Smack](https://github.com/igniterealtime/Smack/) - Cross-platform XMPP client library.

* [RocketMQ](https://github.com/alibaba/RocketMQ) - A fast, reliable, and scalable distributed messaging platform.

## Miscellaneous 

[混杂的]

*Everything else.*

* [Codename One](https://www.codenameone.com/) - Cross platform solution for writing native mobile (iOS, Android, etc.)

* [Design Patterns](https://github.com/iluwatar/java-design-patterns) - Implementation and explanation of the most common design patterns.

* [Failsafe](https://github.com/jhalterman/failsafe) - Simple failure handling with retries and circuit breakers.

* [J2ObjC](https://github.com/google/j2objc) - Java to Objective-C translator for porting Android libraries to iOS.

* [jabba](https://github.com/shyiko/jabba) - Java Version Manager inspired by nvm.

* [JBake](http://jbake.org) - Static website generator.

* [Jimfs](https://github.com/google/jimfs) - In-memory file system.

* [JPad](http://jpad.io/) - Snippet runner.

* [Lanterna](https://github.com/mabe02/lanterna) - Easy console text GUI library similar to curses.

* [LightAdmin](http://lightadmin.org/) - Pluggable CRUD UI library for rapid application development.

* [Modern Java - A Guide to Java 8](https://github.com/winterbe/java8-tutorial) - Popular Java 8 guide.

* [OpenRefine](http://openrefine.org/) - Tool for working with messy data: cleaning, transforming, extending it with web services and linking it to databases.

* [TypeTools](https://github.com/jhalterman/typetools) - Tools for resolving generic types.

## Monitoring 

[监控]

*Tools that monitor applications in production.*

* [AppDynamics](https://www.appdynamics.com/) - Commercial performance monitor.

* [JavaMelody](https://github.com/javamelody/javamelody) - Performance monitoring and profiling.

* [jmxtrans](https://github.com/jmxtrans/jmxtrans/) - Tool to connect to multiple JVMs and to query them for their attributes via JMX. Its query language is based on JSON, which allows non-Java programmers to access the JVMs attributes. Likewise, this tool supports different output writes, including Graphite, Ganglia, StatsD, among others.

* [Jolokia](https://jolokia.org/) - JMX over REST.

* [Kamon](http://www.kamon.io/) - Tool for monitoring applications running on the JVM.

* [Metrics](http://metrics.dropwizard.io/) - Expose metrics via JMX or HTTP and can send them to a database.

* [New Relic](http://newrelic.com/) - Commercial performance monitor.

* [Prometheus](https://prometheus.io/) - Provides a multi-dimensional data model, DSL, autonomous server nodes and much more.

* [SPM](https://sematext.com/spm/) - Commercial performance monitor with distributing transaction tracing for JVM apps.

* [Takipi](https://www.takipi.com/) - Commercial in-production error monitoring and debugging.

* [Stagemonitor](https://github.com/stagemonitor/stagemonitor) - Open source performance monitoring and transaction tracing for JVM apps.

* [Glowroot](https://glowroot.org/) - Open source Java APM.

* [Pinpoint](https://github.com/naver/pinpoint) - Open source APM tool.

## Native 

[系统库交互]

*For working with platform-specific native libraries.*

* [JNA](https://github.com/java-native-access/jna) - Work with native libraries without writing JNI. Also provides interfaces to common system libraries.

* [JNR](https://github.com/jnr/jnr-ffi) - Work with native libraries without writing JNI. Also provides interfaces to common system libraries. Same goals as JNA, but faster, and serves as the basis for the upcoming [Project Panama](http://openjdk.java.net/projects/panama/).

## Natural Language Processing 

[自然语言处理]

*Libraries that specialize on processing text.*

* [CoreNLP](http://nlp.stanford.edu/software/corenlp.shtml) - Stanford's CoreNLP provides a set of fundamental tools for tasks like tagging, named entity recognition, sentiment analysis and many more.

* [DKPro](https://dkpro.github.io/) - A collection of re-usable NLP tools for linguistic pre-processing, machine learning, lexical resources, etc.

* [LingPipe](http://alias-i.com/lingpipe/) - Toolkit for a variety of tasks ranging from POS tagging to sentiment analysis.

## Networking 

[网络]

*Libraries for network programming.*

* [Async Http Client](https://github.com/AsyncHttpClient/async-http-client) - Asynchronous HTTP and WebSocket client library.

* [Comsat](https://github.com/puniverse/comsat) - Integrates standard Java web-related APIs with Quasar fibers and actors.

* [Finagle](https://github.com/twitter/finagle) - Extensible RPC system used to construct high-concurrency servers. It implements uniform client and server APIs for several protocols, and is protocol agnostic, which simplifies the implementation of new protocols.

* [Grizzly](https://grizzly.java.net/) - NIO framework. Used as a network layer in Glassfish.

* [gRPC](https://github.com/grpc/grpc-java) - RPC framework based on protobuf and HTTP/2.

* [Netty](http://netty.io/) - Framework for building high performance network applications.

* [Nifty](https://github.com/facebook/nifty) - Implementation of Thrift clients and servers on Netty.

* [OkHttp](http://square.github.io/okhttp/) - HTTP+SPDY client.

* [Riptide](https://github.com/zalando/riptide) - Client-side response routing for Spring's RestTemplate.

* [Undertow](http://undertow.io/) - Web server providing both blocking and non-blocking API’s based on NIO. Used as a network layer in WildFly.

* [urnlib](https://github.com/slub/urnlib) - Java library for representing, parsing and encoding URNs as in RFC 2141.

## ORM 

[对象关系映射]

*APIs which handle the persistence of objects.*

* [Ebean](http://ebean-orm.github.io/) - Provides simple and fast data access.

* [EclipseLink](https://www.eclipse.org/eclipselink/) - Supports a number of persistence standards: JPA, JAXB, JCA and SDO.

* [Hibernate](http://hibernate.org/orm/) - Robust and widely used with an active community.

* [MyBatis](http://www.mybatis.org/mybatis-3/) - Couples objects with stored procedures or SQL statements.

## PDF 

[PDF]

*Everything that helps with the creation of PDF files.*

* [Apache FOP](http://xmlgraphics.apache.org/fop/) - Creates PDF from XSL-FO.

* [Apache PDFBox](http://pdfbox.apache.org/) - Toolbox for creating and manipulating PDF.

* [Dynamic Jasper](http://dynamicjasper.com/) - Abstraction layer to JasperReports.

* [DynamicReports](http://dynamicreports.org/) - Simplifies JasperReports.

* [flyingsaucer](https://github.com/flyingsaucerproject/flyingsaucer) - XML/XHTML and CSS 2.1 renderer.

* [iText](http://itextpdf.com/) - Creates PDF files programmatically but requires a license for commercial purposes.

* [JasperReports](http://community.jaspersoft.com/project/jasperreports-library) - Complex reporting engine.

## Performance analysis 

[性能分析]

*Tools for performance analysis, profiling and benchmarking.*

* [honest-profiler](https://github.com/RichardWarburton/honest-profiler) - An low-overhead, bias-free sampling profiler.

* [jHiccup](https://github.com/giltene/jHiccup) - Logs and records platform JVM stalls.

* [JProfiler](https://www.ej-technologies.com/products/jprofiler/overview.html) - Commercial profiler.

* [LatencyUtils](https://github.com/LatencyUtils/LatencyUtils) - Utilities for latency measurement and reporting.

* [XRebel](http://zeroturnaround.com/software/xrebel/) - A commercial profiler for Java Web applications.

* [YourKit Java Profiler](https://www.yourkit.com/features/) - Commercial profiler.

## Platform 

[平台]

*Frameworks that are suites of multiple libraries encompassing several categories.*

* [Spring](http://projects.spring.io/spring-framework/) - Provides many packages ranging from dependency injection to aspect-oriented programming to security.

## Reactive libraries 

[响应式编程库]

*Libraries for developing reactive applications.*

* [Reactive Streams](https://github.com/reactive-streams/reactive-streams-jvm/) - Provide a standard for asynchronous stream processing with non-blocking backpressure.

* [Reactor](http://projectreactor.io/) - Library for building reactive fast-data applications.

* [RxJava](https://github.com/ReactiveX/RxJava) - Library for composing asynchronous and event-based programs using observable sequences from the JVM.

* [vert.x](http://vertx.io/) - Polyglot event-driven application framework.

## REST Frameworks 

[REST框架]

*Frameworks specifically for creating RESTful services.*

* [Dropwizard](https://dropwizard.github.io/dropwizard/) - Opinionated framework for setting up modern web applications with Jetty, Jackson, Jersey and Metrics.

* [Feign](https://github.com/Netflix/feign) - HTTP client binder inspired by Retrofit, JAXRS-2.0, and WebSocket.

* [Jersey](https://jersey.java.net/) - JAX-RS reference implementation.

* [Microserver](https://github.com/aol/micro-server) — A convenient extensible Microservices plugin system for Spring & Spring Boot, with over 30 plugins and growing, that supports both micro-monolith and pure microservices styles.

* [RAML](http://raml.org/) - Modeling language to generate REST APIs with contract first.

* [Rapidoid](http://www.rapidoid.org/) - A simple, secure and extremely fast framework consisting of embedded HTTP server, GUI components and dependency injection.

* [rest.li](https://github.com/linkedin/rest.li) - Framework for building robust, scalable RESTful architectures using type-safe bindings and asynchronous, non-blocking IO with an end-to-end developer workflow that promotes clean practices, uniform interface design and consistent data modeling.

* [RESTEasy](http://resteasy.jboss.org/) - Fully certified and portable implementation of the JAX-RS specification.

* [RestExpress](https://github.com/RestExpress/RestExpress) - Thin wrapper on the JBoss Netty HTTP stack to provide scaling and performance.

* [Restlet Framework](https://github.com/restlet/restlet-framework-java/) - Pioneering framework with powerful routing and filtering capabilities, unified client and server API.

* [Retrofit](http://square.github.io/retrofit/) - Type-safe REST client.

* [Spark](http://sparkjava.com/) - Sinatra inspired framework.

* [Swagger](http://swagger.io/) - Swagger is a specification and complete framework implementation for describing, producing, consuming, and visualizing RESTful web services.

## Science 

[科学计算]

*Libraries for scientific computing, analysis and visualization.*

* [DataMelt](http://jwork.org/dmelt/) - Environment for scientific computation, data analysis and data visualization.

* [GraphStream](http://graphstream-project.org/) - Library for modeling and analysis of dynamic graphs.

* [JGraphT](https://github.com/jgrapht/jgrapht) - Graph library that provides mathematical graph-theory objects and algorithms.

* [JGraphX](https://github.com/jgraph/jgraphx) - Library for visualisation (mainly Swing) and interaction with node-edge graphs.

## Search 

[搜索]

*Engines which index documents for search and analysis.*

* [Apache Lucene](https://lucene.apache.org/) - High-performance, full-featured cross-platform text search engine library.

* [Apache Solr](http://lucene.apache.org/solr/) - Enterprise search engine optimized for high volume traffic.

* [Elasticsearch](https://www.elastic.co/) - Distributed, multitenant-capable full-text search engine with a RESTful web interface and schema-free JSON documents.

## Security 

[安全]

*Libraries that handle security, authentication, authorization or session management.*

* [Apache Shiro](http://shiro.apache.org/) - Performs authentication, authorization, cryptography and session management.

* [Bouncy Castle](https://www.bouncycastle.org/java.html) - All-purpose cryptographic library. JCA provider, wide range of functions from basic helpers to PGP/SMIME operations.

* [Cryptomator](https://cryptomator.org/) - Multiplatform transparent client-side encryption of files in the cloud.

* [Google Keyczar](https://github.com/google/keyczar) - Easy to use, yet safe encryption framework with key versioning.

* [Keycloak](http://keycloak.jboss.org/) - Integrated SSO and IDM for browser apps and RESTful web services.

* [OACC](http://oaccframework.org/) - Provides permission-based authorization services.

* [pac4j](https://github.com/pac4j/pac4j) - Security engine.

* [PicketLink](http://picketlink.org/) - Umbrella project for security and identity management.

## Serialization 

[序列化]

*Libraries that handle serialization with high efficiency.*

* [FlatBuffers](https://github.com/google/flatbuffers) - Memory efficient serialization library that can access serialized data without unpacking and parsing it.

* [FST](https://github.com/RuedigerMoeller/fast-serialization) - JDK compatible high performance object graph serialization.

* [Kryo](https://github.com/EsotericSoftware/kryo) - Fast and efficient object graph serialization framework.

* [MessagePack](https://github.com/msgpack/msgpack-java) - Efficient binary serialization format.

## Server 

[服务器]

*Servers which are specifically used to deploy applications.*

* [Apache Tomcat](http://tomcat.apache.org/) - Robust all-round server for Servlet and JSP.

* [Apache TomEE](http://tomee.apache.org/) - Tomcat plus Java EE.

* [Jetty](http://www.eclipse.org/jetty/) - Lightweight, small server, often embedded in projects.

* [WebSphere Liberty](https://developer.ibm.com/wasdev/) - Lightweight, modular server developed by IBM.

* [WildFly](http://www.wildfly.org/) - Formerly known as JBoss and developed by Red Hat with extensive Java EE support.

## Template Engine 

[模板引擎]

*Tools which substitute expressions in a template.*

* [Handlebars.java](http://jknack.github.io/handlebars.java/) - Logic-less and semantic Mustache templates.

* [Thymeleaf](http://www.thymeleaf.org/) - Aims to be a substitute for JSP and works for XML files in general.

## Testing 

[测试]

*Tools that test from model to the view.*

* [Apache JMeter](http://jmeter.apache.org/) - Functional testing and performance measurements.

* [Arquillian](http://arquillian.org/) - Integration and functional testing platform for Java EE containers.

* [AssertJ](http://joel-costigliola.github.io/assertj/) - Fluent assertions that improve readability.

* [Awaitility](https://github.com/jayway/awaitility) - DSL for synchronizing asynchronous operations.

* [Citrus](http://citrusframework.org/) - Integration testing framework with focus on client- and serverside messaging.

* [ConcurrentUnit](https://github.com/jhalterman/concurrentunit) - Toolkit for testing multi-threaded and asynchronous applications.

* [Cucumber](https://github.com/cucumber/cucumber-jvm) - BDD testing framework.

* [Cukes-REST](https://github.com/ctco/cukes-rest) - A collection of Gherkin steps for REST-service testing using Cucumber.

* [Gatling](http://gatling.io/) - Load testing tool designed for ease of use, maintainability and high performance.

* [GreenMail](http://www.icegreen.com/greenmail/) - In-memory email server for integration testing. Supports SMTP, POP3 and IMAP including SSL.

* [Hamcrest](http://hamcrest.org/JavaHamcrest/) - Matchers that can be combined to create flexible expressions of intent.

* [J8Spec](https://github.com/j8spec/j8spec/) - J8Spec is a library that allows tests written in Java to follow the BDD style introduced by RSpec and Jasmine.

* [JBehave](http://jbehave.org/) - Framework for Behavioural Driven Development.

* [JGiven](http://jgiven.org) - Developer-friendly BDD testing framework compatible with JUnit and TestNG.

* [JMockit](http://jmockit.org/) - Mocks static, final methods and more.

* [junit-dataprovider](https://github.com/TNG/junit-dataprovider) - A TestNG like dataprovider runner for JUnit.

* [JUnitParams](https://pragmatists.github.io/JUnitParams/) - Creation of readable and maintainable parametrised tests.

* [Mockito](https://github.com/mockito/mockito) - Creation of test double objects in automated unit tests for the purpose of TDD or BDD.

* [Moco](https://github.com/dreamhead/moco) - Concise web services for stubs and mocks, Duke's Choice Award 2013.

* [PIT](http://pitest.org) - Fast mutation-testing framework for evaluating fault-detection abilities of existing JUnit or TestNG test-suites.

* [PowerMock](https://github.com/jayway/powermock) -  Enables mocking of static methods, constructors, final classes and methods, private methods and removal of static initializers.

* [REST Assured](https://github.com/jayway/rest-assured) - Java DSL for easy testing for REST/HTTP services.

* [Selenide](http://selenide.org/) - Concise API around Selenium to write stable and readable UI tests.

* [Selenium](http://docs.seleniumhq.org/) - Portable software testing framework for web applications.

* [Spock](http://spockframework.github.io/spock/docs/) - JUnit-compatible framework featuring an expressive Groovy-derived specification language.

* [Truth](https://github.com/google/truth) - Google's assertion and proposition framework.

* [WireMock](http://wiremock.org/) - Stubbs and mocks web services.

## Utility 

[工具类]

*Libraries which provide general utility functions.*

* [Apache Commons](http://commons.apache.org/) - Provides different general purpose functions like configuration, validation, collections, file upload or XML processing.

* [CRaSH](http://www.crashub.org) - Provides a shell into a JVM that's running CRaSH. Used by Spring Boot and others.

* [Dex](https://github.com/PatMartin/Dex) - Java/JavaFX tool capable of powerful ETL and data visualization.

* [Gephi](https://github.com/gephi/gephi/) - Cross-platform for visualizing and manipulating large graph networks.

* [Guava](https://github.com/google/guava) - Collections, caching, primitives support, concurrency libraries, common annotations, string processing, I/O, and so forth.

* [JADE](http://jade.tilab.com/) - Framework and environment for building and to debugging multi-agent systems.

* [JavaVerbalExpressions](https://github.com/VerbalExpressions/JavaVerbalExpressions) - A library that helps to construct difficult regular expressions.

* [Protégé](http://protege.stanford.edu/) - Provides an ontology editor and a framework to build knowledge-based systems.

## Web Crawling 

[网络爬虫]

*Libraries that analyze the content of websites.*

* [Apache Nutch](http://nutch.apache.org/) - Highly extensible, highly scalable web crawler for production environment.

* [Crawler4j](https://github.com/yasserg/crawler4j) - Simple and lightweight web crawler.

* [JSoup](http://jsoup.org/) - Scrapes, parses, manipulates and cleans HTML.

## Web Frameworks 

[网络框架]

*Frameworks that handle the communication between the layers of an web application.*

* [Apache Tapestry](http://tapestry.apache.org/) - Component-oriented framework for creating dynamic, robust, highly scalable web applications.

* [Apache Wicket](http://wicket.apache.org/) - Component-based web application framework similar to Tapestry with a stateful GUI.

* [Blade](https://github.com/biezhi/blade) - Lightweight, modular framework which aims to be elegant and simple.

* [Grails](https://grails.org/) - Groovy framework with the aim to provide a highly productive environment by favoring convention over configuration, no XML and support for mixins.

* [Jooby](http://jooby.org) - Scalable, fast and modular micro framework which offers multiple programming models.

* [Ninja](http://www.ninjaframework.org/) - Full stack web framework.

* [Pippo](http://www.pippo.ro/) - Small, highly modularized Sinatra-like framework.

* [Play](https://www.playframework.com/) - Uses convention over configuration, hot code reloading and display of errors in the browser.

* [PrimeFaces](http://primefaces.org/) - JSF framework which has a free and a commercial version with support. Provides several frontend components.

* [Ratpack](https://ratpack.io/) - Set of libraries that facilitate fast, efficient, evolvable and well tested HTTP applications.

* [Spring Boot](http://projects.spring.io/spring-boot/) - Microframework which simplifies the development of new Spring applications.

* [Vaadin](https://vaadin.com/home) - Event-driven framework build on top of GWT. Uses server-side architecture with Ajax on the client-side.

# Resources

## Communities 

[委员会]

*Active discussions.*

* [r/java](https://www.reddit.com/r/java) - Subreddit for the Java community.

* [stackoverflow](http://stackoverflow.com/questions/tagged/java) - Question/answer platform.

* [vJUG](http://virtualjug.com/) - Virtual Java User Group.

## Frontends 

[前端]

*Websites that provide a frontend for this list. Please note, there won't be an official website. We don't associate with a particular website and everybody is allowed to create one.*

* [java.libhunt.com](https://java.libhunt.com/)

## Influential Books 

[有影响力的书]

*Books that had a high impact and are still worth reading.*

* [Effective Java (2nd Edition)](http://www.amazon.com/Effective-Java-Edition-Joshua-Bloch/dp/0321356683)

* [Java 8 in Action](http://www.amazon.com/Java-Action-Lambdas-functional-style-programming/dp/1617291994/)

* [Java Concurrency in Practice](http://www.amazon.com/Java-Concurrency-Practice-Brian-Goetz/dp/0321349601)

* [Thinking in Java](http://www.amazon.com/Thinking-Java-Edition-Bruce-Eckel/dp/0131872486)

## Podcasts 

[播客]

*Something to listen to while programming.*

* [The Java Council](http://virtualjug.com/podcast/)

* [The Java Posse](http://www.javaposse.com/) - Discontinued as of 02/2015.

## Twitter 

[Twitter]

*Active accounts to follow. Descriptions from Twitter.*

* [Adam Bien](https://twitter.com/AdamBien/) - Freelancer: Author, JavaONE Rockstar Speaker, Consultant, Java Champion.

* [Aleksey Shipilëv](https://twitter.com/shipilev) - Performance Geek, Benchmarking Tzar, Concurrency Bug Hunter.

* [Antonio Goncalves](https://twitter.com/agoncal/) - Java Champion, JUG Leader, Devoxx France, Java EE 6/7, JCP, Author.

* [Arun Gupta](https://twitter.com/arungupta/) - Java Champion, JavaOne Rockstar, JUG Leader, Devoxx4Kids-er, VP of Developer Advocacy at Couchbase.

* [Brian Goetz](https://twitter.com/BrianGoetz) - Java Language Architect at Oracle.

* [Bruno Borges](https://twitter.com/brunoborges) - Product Manager/Java Jock at Oracle.

* [Ed Burns](https://twitter.com/edburns) - Consulting Member of the Technical Staff at Oracle.

* [Eugen Paraschiv](https://twitter.com/baeldung) - Author of the Spring Security Course.

* [James Weaver](https://twitter.com/JavaFXpert) - Java/JavaFX/IoT developer, author and speaker.

* [Java EE](https://twitter.com/Java_EE/) - Official Java EE Twitter account.

* [Java Magazine](https://twitter.com/Oraclejavamag) - Official Java Magazine account.

* [Java](https://twitter.com/java/) - Official Java Twitter account.

* [Javin Paul](https://twitter.com/javinpaul) - Well-known Java blogger.

* [Lukas Eder](https://twitter.com/lukaseder) - Java Champion, speaker, JUG.ch co-leader, Founder and CEO Data Geekery (jOOQ).

* [Mario Fusco](https://twitter.com/mariofusco) - RedHatter, JUG coordinator, frequent speaker and author.

* [Mark Reinhold](https://twitter.com/mreinhold) - Chief Architect, Java Platform Group, Oracle.

* [Markus Eisele](https://twitter.com/myfear) - Java EE evangelist, Red Hat.

* [Martijn Verburg](https://twitter.com/karianna) - London JUG co-leader, speaker, author, Java Champion and much more.

* [Martin Thompson](https://twitter.com/mjpt777) - Pasty faced performance gangster.

* [OpenJDK](https://twitter.com/OpenJDK) - Official OpenJDK account.

* [Peter Lawrey](https://twitter.com/PeterLawrey) - Peter Lawrey, Java performance expert.

* [Reza Rahman](https://twitter.com/reza_rahman) - Java EE/GlassFish/WebLogic evangelist, author, speaker, open source hacker.

* [Simon Maple](https://twitter.com/sjmaple) - Java Champion, virtualJUG founder, LJC leader, RebelLabs author.

* [Stephen Colebourne](https://twitter.com/jodastephen) - Java Champion, speaker.

* [Trisha Gee](https://twitter.com/trisha_gee) - Java Champion and speaker.

## Websites 

[网站]

*Sites to read.*

* [Google Java Style](https://google.github.io/styleguide/javaguide.html)

* [InfoQ](http://www.infoq.com/)

* [Java Algorithms and Clients](http://algs4.cs.princeton.edu/code/)

* [Java, SQL, and jOOQ](http://blog.jooq.org/)

* [Java.net](https://community.oracle.com/community/java)

* [Javalobby](https://dzone.com/java-jdk-development-tutorials-tools-news)

* [JavaWorld](http://www.javaworld.com/)

* [JAXenter](https://jaxenter.com/)

* [RebelLabs](http://zeroturnaround.com/rebellabs/)

* [The Takipi Blog](http://blog.takipi.com/)

* [TheServerSide.com](http://www.theserverside.com/)

* [Vanilla Java](https://vanilla-java.github.io/)

* [Voxxed](https://www.voxxed.com/)

# Contributing

Contributions are very welcome!

Please have a look at [CONTRIBUTING](https://github.com/akullpp/awesome-java/blob/master/CONTRIBUTING.md) for guidelines.

SYNC FROM https://github.com/akullpp/awesome-java