Awesome Java

A curated list of awesome Java frameworks, libraries and software. Inspired by awesome-python. Topics which have no libraries as of yet are located in README.tmp!

• Awesome Java
  • Application Server
  • Build Tool
  • Code Analysis
  • Compiler-compiler
  • Continuous Integration
  • Database Access
  • Date and Time
  • Dependency Injection
  • Distributed Applications
  • GUI
  • Game Development
  • High Performance
  • IDE
  • JSON
  • Logging
  • Machine Learning
  • MapReduce
  • Messaging
  • Miscellaneous
  • Natural Language Processing
  • ORM
  • Permissions
  • Template Engine
  • Testing
  • Utility
  • Web Crawling
  • Web Frameworks
  • REST Frameworks
• Resources
  • Twitter
  • Websites
  • Influental Books
• Contributing

Application Server

Servers which are specifically used to deploy applications

• GlassFish - Open source reference implementation for Java EE sponsored by Oracle
• WildFly - Formerly known as JBoss and developed by Red Hat with extensive Java EE support
• Jetty - Lightweight, small server often embedded in projects. Part of the Eclipse Foundation
• Apache Tomcat - Robust allround server for Servlet and JSP

Build Tool

Tools which handle the buildcycle of an application

• Apache Ant - Procedural build configurations via XML files
• Apache Maven - Declarative lifecycle and dependency managment which favors conventions
• Gradle - Incremental builds which are programmed via Groovy

Code Analysis

Tools that provide metrics and quality measurements of static code

• SonarQube - Inspection tool for code quality
• FindBugs - Static analysis to find potential bugs

Compiler-compiler

Tools that create parsers, interpreters or compilers

• ANTLR
• JavaCC

Continuous Integration

Tools which support continuously building, testing and releasing applications

• Jenkins - Provides server-based CI services, often seen as the successor to Hudson

Database Access

Everything which simplifies the access to the database

• DBeaver - Graphical database manager
• JDBI - Simplification of JDBC
• jOOQ - Generates typesafe code based on SQL schema

Date and Time

Libraries related to date and time.

• Java 8 SE: Date and Time API - Basically it incorporates Joda-Time
• Joda-Time - De facto standard date/time-library before Java 8

Dependency Injection

Libraries that help to realize the Inversion Of Control paradigm

• Google Guice
• Spring
• Weld - CDI reference implementation

Distributed Applications

Libraries and frameworks used to ease writing distributed and fault-tolerant applications

• Akka - Toolkit and runtime for building highly concurrent, distributed, and fault tolerant event-driven applications on the JVM.
• JGroups - Toolkit for reliable messaging and creating clusters whose nodes can send messages to each other

GUI

Libraries to create modern graphical user interfaces

• JavaFX

Game Development

Frameworks that support the development of games

• LWJGL
• libGDX

High Performance

Everything about high performance computation, from collections to specific libraries

• Trove - High performance collections
• HPPC - High performance collections
• Disruptor - High Performance Inter-Thread Messaging Library

IDE

Integrated development environments that try to simplify several aspects of development

• NetBeans
• Eclipse
• IntelliJ

JSON

Libraries that simplify JSON processing

• Google Gson
• Jackson

Logging

Libraries that log the behavior of an application

• SLF4J - An abstraction layer which is to be used with an implementation
• Log4j
• Logback

Machine Learning

Tools that allow to learn from data via a set of specific algorithms

• Apache Mahout
• Apache Spark
• Mallet
• Weka

MapReduce

Libraries that provide access to the MapReduce model

• Apache Hadoop

Messaging

Tools that help sending messages between clients to ensure protocol independency

• Apache ActiveMQ
• JBoss HornetQ

Miscellaneous

Everything else

• Jimfs - An in-memory file system
• Lombok - Code-generator which aims to reduce the verbosity of Java

Natural Language Processing

Libraries that are specialized on processing text

• Apache OpenNLP
• LingPipe

ORM

APIs which handle the persistence of objects

• EclipseLink
• Hibernate

Permissions

Libraries that handle role/rights with associated permissions

• Apache Shiro

Template Engine

Tools which substitute expressions in a template

• JSP
• Apache Tapestry
• Apache Velocity
• Thymeleaf
• Jtwig

Testing

Tools that test from object to interface level

• Apache JMeter - Functional testing and performance measurements
• Mockito
• Arquillian
• Selenium - Frontend testing
• VisualVM
• Eclipse Memory Analyzer Tool
• Hamcrest - Framework for writing declarative assertion matchers
• FEST - Collection of testing libraries
• AssertJ - Fluent assertions
• Calipher - Microbenchmarking framework
• JMH - Microbenchmarking
• TestNG - Testing framework
• JUnit - Testing framework

Utility

Libraries which provide unspecific functionality, e.g. optimized datastructures

• Apache Commons
• Google Guava

Web Crawling

Libraries that analyze the content of websites

• Apache Nutch
• Crawler4j

Web Frameworks

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

• Spring
• Grails
• Vaadin
• GWT
• Apache Wicket
• Play
• Apache Struts
• PrimeFaces

REST Frameworks

Frameworks specifically for creating RESTful services

• Dropwizard
• Jersey

Twitter

People to follow

• Adam Bien
• Antonio Goncalves
• Arun Gupta
• Java
• Java EE
• Java.net
• Joshua Bloch
• Pete Muir

Websites

Important websites

• Java.net

Influental Books

• Effective Java (2nd Edition)

Contributing

Contributions are very welcome. Just mind the general style.