├── CONTRIBUTING.md └── README.md /CONTRIBUTING.md: -------------------------------------------------------------------------------- 1 | # Contribution Guidelines 2 | 3 | Unfortunately, not every library/tool/framework can be considered. The aim of the list is to provide a concise list of noteworthy modern software. This means that suggested software is either 4 | 5 | (a) widely recommended regardless of personal opinion 6 | 7 | (b) highly discussed in the community due to its innovative nature 8 | 9 | (c) absolutely unique in its approach and function 10 | 11 | (d) a niche product that fills a gap 12 | 13 | Self-promotion is frowned upon and will be reviewed critically but the suggestion will of course be approved if they criteria match. 14 | 15 | If a certain entry does not get accepted, you should first look if there has been a discussion before. These discussions are in the issue section and normally marked with the question tag. If there hasn't been such a topic, you are free to create a new issue tagged as question. 16 | 17 | 18 | Furthermore, please ensure your pull request follows the following guidelines: 19 | 20 | * Please search previous suggestions before making a new one, as yours may be a duplicate. 21 | * Please make an individual pull request for each suggestion. 22 | * Use the following format for libraries: \[LIBRARY\]\(LINK\) - DESCRIPTION. 23 | * Entries should be sorted in ascending alphabetical order, i.e. a to z. 24 | * New categories, or improvements to the existing categorization are welcome. 25 | * Keep descriptions short, simple and unbiased. 26 | * End all descriptions with a full stop/period. 27 | * Check your spelling and grammar. 28 | * Make sure your text editor is set to remove trailing whitespace. 29 | 30 | Thank you for your suggestions! 31 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Awesome Java 2 | 3 | A curated list of awesome Java frameworks, libraries and software. Inspired by other [awesome lists](https://github.com/bayandin/awesome-awesomeness). 4 | 5 | - [Awesome Java](#awesome-java) 6 | - [Build Tool](#build-tool) 7 | - [Bytecode Manipulation](#bytecode-manipulation) 8 | - [Cluster Management](#cluster-management) 9 | - [Code Analysis](#code-analysis) 10 | - [Compiler-compiler](#compiler-compiler) 11 | - [Continuous Integration](#continuous-integration) 12 | - [Database](#database) 13 | - [Date and Time](#date-and-time) 14 | - [Dependency Injection](#dependency-injection) 15 | - [Development](#development) 16 | - [Distributed Applications](#distributed-applications) 17 | - [Distributed Databases](#distributed-databases) 18 | - [Distribution](#distribution) 19 | - [Document Processing](#document-processing) 20 | - [Game Development](#game-development) 21 | - [GUI](#gui) 22 | - [High Performance](#high-performance) 23 | - [IDE](#ide) 24 | - [Imagery](#imagery) 25 | - [JSON](#json) 26 | - [JVM and JDK](#jvm-and-jdk) 27 | - [Logging](#logging) 28 | - [Machine Learning](#machine-learning) 29 | - [Messaging](#messaging) 30 | - [Miscellaneous](#miscellaneous) 31 | - [Natural Language Processing](#natural-language-processing) 32 | - [Networking](#networking) 33 | - [ORM](#orm) 34 | - [PDF](#pdf) 35 | - [REST Frameworks](#rest-frameworks) 36 | - [Science](#science) 37 | - [Search](#search) 38 | - [Security](#security) 39 | - [Serialization](#serialization) 40 | - [Server](#server) 41 | - [Template Engine](#template-engine) 42 | - [Testing](#testing) 43 | - [Utility](#utility) 44 | - [Web Crawling](#web-crawling) 45 | - [Web Frameworks](#web-frameworks) 46 | - [Resources](#resources) 47 | - [Communities](#communities) 48 | - [Influential Books](#influential-books) 49 | - [Podcasts](#podcasts) 50 | - [Twitter](#twitter) 51 | - [Websites](#websites) 52 | - [Contributing](#contributing) 53 | 54 | ## Build Tool 55 | 56 | *Tools which handle the buildcycle of an application.* 57 | 58 | * [Apache Maven](http://maven.apache.org/) - Declarative build and dependency management which favors convention over configuration. It's preferable to Apache Ant which uses a rather procedural approach and can be difficult to maintain. 59 | * [Gradle](http://www.gradle.org/) - Incremental builds which are programmed via Groovy instead of declaring XML. Works well with Maven's dependency management and treats Ant scripts as first-class citizens. 60 | 61 | ## Bytecode Manipulation 62 | 63 | *Libraries to manipulate Java bytecode programmatically.* 64 | 65 | * [ASM](http://asm.ow2.org/) - All purpose, low level, bytecode manipulation and analysis. 66 | * [Byte Buddy](http://bytebuddy.net/) - Further simplifies bytecode generation with a fluent API. 67 | * [Javassist](http://www.csg.ci.i.u-tokyo.ac.jp/~chiba/javassist/) - Tries to simplify the editing of bytecode. 68 | 69 | ## Cluster Management 70 | 71 | *Frameworks which can dynamically manage applications inside of a cluster.* 72 | 73 | * [Apache Aurora](http://aurora.apache.org/) - Apache Aurora is a Mesos framework for long-running services and cron jobs. 74 | * [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. 75 | 76 | ## Code Analysis 77 | 78 | *Tools that provide metrics and quality measurements.* 79 | 80 | * [Checkstyle](http://checkstyle.sourceforge.net/) - Static analysis of coding conventions and standards. 81 | * [FindBugs](http://findbugs.sourceforge.net/) - Static analysis of bytecode to find potential bugs. 82 | * [PMD](http://pmd.sourceforge.net/) - Source code analysis of bad coding practices. 83 | * [SonarQube](http://www.sonarqube.org/) - Integrates other analysis components via plugins and provides an overview of the metrics over time. 84 | 85 | ## Compiler-compiler 86 | 87 | *Frameworks that help to create parsers, interpreters or compilers.* 88 | 89 | * [ANTLR](http://www.antlr.org/) - Complex full-featured framework for top-down parsing. 90 | * [JavaCC](https://javacc.java.net/) - More specific and slightly easier to learn. Has syntactic lookahead. 91 | 92 | ## Continuous Integration 93 | 94 | *Tools which support continuously building, testing and releasing applications.* 95 | 96 | * [Bamboo](https://www.atlassian.com/software/bamboo) - Atlassian's solution with good integration of other products. You can either apply for an Open Source license or buy it. 97 | * [CircleCI](https://circleci.com/) - Hosted service with a free trial. 98 | * [Codeship](https://www.codeship.io/features) - Hosted services with a limited free plan. 99 | * [Go](http://www.thoughtworks.com/products/go-continuous-delivery) - ThoughtWork's CI open source solution. 100 | * [Jenkins](http://jenkins-ci.org/) - Provides server-based deployment services. 101 | * [TeamCity](http://www.jetbrains.com/teamcity/) - JetBrain's CI solution with a free version. 102 | * [Travis](https://travis-ci.org) - Hosted service often used for open source projects. 103 | 104 | ## Database 105 | 106 | *Everything which simplifies interactions with the database.* 107 | 108 | * [Flyway](http://flywaydb.org/) - Simple database migration with Java API. 109 | * [H2](http://h2database.com/) - Small SQL Database notable for its in-memory functionality. 110 | * [JDBI](http://jdbi.org/) - Convenient abstraction of JDBC. 111 | * [jOOQ](http://www.jooq.org/) - Generates typesafe code based on SQL schema. 112 | * [Liquibase](http://www.liquibase.org/) - An open source database-independent library for tracking, managing and applying database schema changes. 113 | * [Presto](https://github.com/facebook/presto) - Distributed SQL query engine for big data. 114 | * [Querydsl](http://www.querydsl.com/) - Typesafe unified queries for Java. 115 | 116 | ## Date and Time 117 | 118 | *Libraries related to handling date and time.* 119 | 120 | * [Joda-Time](http://www.joda.org/joda-time/) - De facto standard date/time-library before Java 8. 121 | * [Time4J](https://github.com/MenoData/Time4J) - Advanced date and time library for Java. 122 | 123 | ## Dependency Injection 124 | 125 | *Libraries that help to realize the [Inversion of Control](http://en.wikipedia.org/wiki/Inversion_of_control) paradigm.* 126 | 127 | * [Dagger](http://square.github.io/dagger/) - Compile-time injection framework without reflection, mainly for Android. 128 | * [Guice](https://github.com/google/guice) - Lightweight but powerful framework that completes Dagger. 129 | 130 | ## Development 131 | 132 | *Augmentation of the development process at a fundamental level.* 133 | 134 | * [AspectJ](https://eclipse.org/aspectj/) - Seamless aspect-oriented programming extension. 135 | * [Auto](https://github.com/google/auto) - Collection of source code generators. 136 | * [DCEVM](http://dcevm.github.io/) - Modification of the JVM that allows unlimited redefinition of loaded classes at runtime. 137 | * [JRebel](http://zeroturnaround.com/software/jrebel/) - Commercial software that instantly reloads code and configuration changes without redeploys. 138 | * [Lombok](http://projectlombok.org/) - Code-generator which aims to reduce the verbosity of Java. 139 | * [RxJava](https://github.com/Netflix/RxJava) - Library for composing asynchronous and event-based programs using observable sequences from the JVM. 140 | * [Spring Loaded](https://github.com/spring-projects/spring-loaded) - Another class reloading agent for the JVM. 141 | * [vert.x](http://vertx.io/) - Polyglot event-driven application framework for the JVM. 142 | 143 | ## Distributed Applications 144 | 145 | *Libraries and frameworks for writing distributed and fault-tolerant applications.* 146 | 147 | * [Akka](http://akka.io) - Toolkit and runtime for building concurrent, distributed, and fault tolerant event-driven applications. 148 | * [Apache Storm](http://storm.incubator.apache.org/) - Distributed realtime computation system. 149 | * [Apache ZooKeeper](http://zookeeper.apache.org/) - Coordination service with distributed configuration, synchronization, and naming registry for large distributed systems. 150 | * [Hazelcast](http://hazelcast.org/) - Distributed and highly scalable in-memory datagrid. 151 | * [Hystrix](https://github.com/Netflix/Hystrix) - Latency and Fault Tolerance for Distributed Systems. 152 | * [JGroups](http://www.jgroups.org/) - Toolkit for reliable messaging and creating clusters whose nodes can send messages to each other. 153 | * [Quasar](http://www.paralleluniverse.co/quasar/) - Lightweight threads and actors for the JVM. 154 | 155 | ## Distributed Databases 156 | 157 | *Databases in a distributed system that appear to applications as a single data source.* 158 | 159 | * [Apache Cassandra](http://cassandra.apache.org) - Apache Cassandra is a distributed column-oriented database providing high availability with no single point of failure. 160 | * [Apache HBase](http://hbase.apache.org) - Apache HBase is the Hadoop database, a distributed, scalable, big data store. 161 | * [Infinispan](http://infinispan.org/) - Distributed and highly concurrent key/value datastore used for caching. 162 | 163 | ## Distribution 164 | 165 | *Tools which handle the distribution of Java applications in native formats.* 166 | 167 | * [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. 168 | * [IzPack](http://izpack.org/) - Setup authoring tool for cross-platform deployments. 169 | * [Launch4j](http://launch4j.sourceforge.net/) - Wraps JARs in lightweight and native Windows executables. 170 | * [packr](https://github.com/libgdx/packr/) - Packs your JAR, assets and JVM for native distribution on Windows, Linux and Mac OS X. 171 | 172 | ## Document Processing 173 | 174 | *Libraries that assist with processing office document formats.* 175 | 176 | * [Apache POI](http://poi.apache.org/) - Supports OOXML (XLSX, DOCX, PPTX) as well as OLE2 (XLS, DOC or PPT). 177 | * [jOpenDocument](http://www.jopendocument.org/) - Processes the OpenDocument format. 178 | 179 | ## Game Development 180 | 181 | *Frameworks that support the development of games.* 182 | 183 | * [jMonkeyEngine](http://jmonkeyengine.org/) - Game engine for modern 3D development. 184 | * [libGDX](http://libgdx.badlogicgames.com/) - All-round cross-platform, high-level framework. 185 | * [LWJGL](http://lwjgl.org/) - Robust framework that abstracts libraries like OpenGL/CL/AL. 186 | 187 | ## GUI 188 | 189 | *Libraries to create modern graphical user interfaces.* 190 | 191 | * [JavaFX](http://www.oracle.com/technetwork/java/javase/overview/javafx-overview-2158620.html) - The successor of Swing. 192 | * [Scene Builder](http://www.oracle.com/technetwork/java/javase/downloads/javafxscenebuilder-info-2157684.html) - Visual layout tool for JavaFX applications. 193 | 194 | ## High Performance 195 | 196 | *Everything about high performance computation, from collections to specific libraries.* 197 | 198 | * [Disruptor](http://lmax-exchange.github.io/disruptor/) - Inter-thread messaging library. 199 | * [fastutil](http://fastutil.di.unimi.it/) - Fast and compact type-specific collections for Java. 200 | * [GS Collections](https://github.com/goldmansachs/gs-collections) - Collection framework inspired by Smalltalk. 201 | * [Koloboke](https://github.com/OpenHFT/Koloboke) - Hash sets and hash maps. 202 | * [HPPC](http://labs.carrotsearch.com/hppc.html) - Primitive collections. 203 | * [Javolution](http://javolution.org/) - Library for real-time and embedded systems. 204 | * [Reactor](http://projectreactor.io/) - Library for building reactive fast-data applications. 205 | * [Trove](http://trove.starlight-systems.com/) - Primitive collections. 206 | 207 | ## IDE 208 | 209 | *Integrated development environments that try to simplify several aspects of development.* 210 | 211 | * [Eclipse](http://www.eclipse.org/) - Does a lot of things in the background. Noteworthy are its large amount of plugins. 212 | * [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. 213 | * [NetBeans](https://netbeans.org/) - Provides integration for several Java SE and EE features starting with database access and servers to HTML5 and AngularJS. 214 | 215 | ## Imagery 216 | 217 | *Libraries that assist with the creation, evaluation or manipulation of graphical images.* 218 | 219 | * [Imgscalr](https://github.com/thebuzzmedia/imgscalr) - Imgscalr is an very simple and efficient (hardware accelerated) image-scaling library implemented in pure Java 2D. 220 | * [Picasso](http://square.github.io/picasso/) - Image downloading and caching library for Android. 221 | * [Thumbnailator](https://code.google.com/p/thumbnailator) - Thumbnailator is a high-quality thumbnail generation library for Java. 222 | * [ZXing](https://github.com/zxing/zxing) - Multi-format 1D/2D barcode image processing library. 223 | 224 | ## JSON 225 | 226 | *Libraries that simplify JSON processing.* 227 | 228 | * [Gson](https://code.google.com/p/google-gson/) - Serializes Java objects to JSON and vice versa. Good performance with on-the-fly usage. 229 | * [Jackson](http://wiki.fasterxml.com/JacksonHome) - Similar to GSON but has performance gains if you need to instantiate the library more often. 230 | 231 | ## JVM and JDK 232 | 233 | *Current implementations of the JVM/JDK.* 234 | 235 | * [JDK 9](https://jdk9.java.net/) - Early access releases of JDK 9. 236 | * [OpenJDK](http://openjdk.java.net/) - Open source implementation. 237 | 238 | ## Logging 239 | 240 | *Libraries that log the behavior of an application.* 241 | 242 | * [Apache Log4j 2](http://logging.apache.org/log4j/) - Complete rewrite of the previous version. Now has a powerful plugin and configuration architecture. 243 | * [kibana](http://www.elasticsearch.org/overview/kibana/) - Analyzes and visualizes log files. 244 | * [Logback](http://logback.qos.ch/) - Founded by the same developer as Log4j and proves to be a robust logging library with interesting configuration options via Groovy. 245 | * [logstash](http://logstash.net/) - Tool for managing log files. 246 | * [SLF4J](http://www.slf4j.org/) - Abstraction layer which is to be used with an implementation. 247 | 248 | ## Machine Learning 249 | 250 | *Tools that provide specific statistical algorithms which allow to learn from data.* 251 | 252 | * [Apache Flink](https://flink.apache.org/) - Fast and reliable large-scale data processing engine. 253 | * [Apache Hadoop](http://hadoop.apache.org/) - Open-source software framework for storage and large-scale processing of data-sets on clusters of commodity hardware. 254 | * [Apache Mahout](https://mahout.apache.org/) - Scalable algorithms focused on collaborative filtering, clustering and classification. 255 | * [Apache Spark](http://spark.apache.org/) - Open-source data analytics cluster computing framework. 256 | * [H2O](http://0xdata.com/) - Analytics engine for statistics over big data. 257 | * [Weka](http://www.cs.waikato.ac.nz/ml/weka/) - Collection of algorithms for data mining tasks ranging from pre-processing to visualization. 258 | 259 | ## Messaging 260 | 261 | *Tools that help sending messages between clients to ensure protocol independency.* 262 | 263 | * [Aeron](https://github.com/real-logic/Aeron) - Efficient reliable unicast and multicast message transport. 264 | * [Apache ActiveMQ](http://activemq.apache.org/) - Open-source message broker that implements JMS and converts synchronous to asynchronous communication. 265 | * [Apache Camel](http://camel.apache.org/) - Glues together different transport APIs via Enterprise Integration Patterns. 266 | * [Apache Kafka](http://kafka.apache.org/) - High-throughput distributed messaging system. 267 | * [JBoss HornetQ](http://hornetq.jboss.org/) - Clear, concise, modular and made to be embedded. 268 | * [JeroMQ](https://github.com/zeromq/jeromq) - Pure Java implementation of ZeroMQ. 269 | 270 | ## Miscellaneous 271 | 272 | *Everything else.* 273 | 274 | * [Design Patterns](https://github.com/iluwatar/java-design-patterns) - Implementation and explanation of the most common design patterns. 275 | * [fabric8](http://fabric8.io/) - Integration platform for Java containers. 276 | * [Jimfs](https://github.com/google/jimfs) - In-memory file system. 277 | * [Lanterna](https://code.google.com/p/lanterna/) - Easy console text GUI library similar to curses. 278 | * [LightAdmin](http://lightadmin.org/) - Pluggable CRUD UI library for rapid application development. 279 | * [Metrics](http://metrics.codahale.com/) - Create your own metrics or add them for supported frameworks, then expose them via JMX or HTTP, or send them to a database. 280 | * [OpenRefine](http://openrefine.org/) - Tool for working with messy data: cleaning, transforming, extending it with web services and linking it to databases. 281 | * [RoboVM](http://www.robovm.org/) - Commercial framework with a free trial to write native iOS apps in Java. 282 | 283 | ## Natural Language Processing 284 | 285 | *Libraries that specialize on processing text.* 286 | 287 | * [Apache OpenNLP](https://opennlp.apache.org/) - Toolkit for common tasks like tokenization. 288 | * [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. 289 | * [LingPipe](http://alias-i.com/lingpipe/) - Toolkit for a variety of tasks ranging from POS tagging to sentiment analysis. 290 | * [Mallet](http://mallet.cs.umass.edu/) - Statistical natural language processing, document classification, clustering, topic modeling and more. 291 | 292 | ## Networking 293 | 294 | *Libraries for network programming.* 295 | 296 | * [Grizzly](https://grizzly.java.net/) - NIO framework. Used as a network layer in Glassfish. 297 | * [Netty](http://netty.io/) - A framework for building high performance network applications. 298 | * [OkHttp](http://square.github.io/okhttp/) - An HTTP+SPDY client for Android and Java applications. 299 | * [Undertow](http://undertow.io/) - Web server providing both blocking and non-blocking API’s based on NIO. Used as a network layer in WildFly. 300 | 301 | ## ORM 302 | 303 | *APIs which handle the persistence of objects.* 304 | 305 | * [Ebean](http://ebean-orm.github.io/) - ORM Framework that provides fast data access and even faster coding. 306 | * [EclipseLink](https://www.eclipse.org/eclipselink/) - Supports a number of persistence standards: JPA, JAXB, JCA and SDO. 307 | * [Hibernate](http://hibernate.org/orm/) - Robust and widely used with an active community. 308 | * [OrmLite](http://ormlite.com/) - Lightweight ORM package avoiding the complexity and overhead of other ORM products. 309 | 310 | ## PDF 311 | 312 | *Everything that helps with the creation of PDF files.* 313 | 314 | * [Apache FOP](http://xmlgraphics.apache.org/fop/) - Creates PDF from XSL-FO. 315 | * [Apache PDFBox](http://pdfbox.apache.org/) - Toolbox for creating and manipulating PDF. 316 | * [DynamicReports](http://dynamicreports.org/) - Simplifies JasperReports. 317 | * [iText](http://itextpdf.com/) - Easy to use PDF library which creates PDF files programmatically but requires a license for commercial purposes. 318 | * [JasperReports](http://community.jaspersoft.com/project/jasperreports-library) - Complex reporting engine. 319 | 320 | ## REST Frameworks 321 | 322 | *Frameworks specifically for creating RESTful services.* 323 | 324 | * [Dropwizard](https://dropwizard.github.io/dropwizard/) - Opinionated framework for setting up modern web applications, includes Jetty, Jackson, Jersey and Metrics. 325 | * [Feign](https://github.com/Netflix/feign) - Java to HTTP client binder inspired by Retrofit, JAXRS-2.0, and WebSocket. 326 | * [Jersey](https://jersey.java.net/) - JAX-RS reference implementation. 327 | * [RESTEasy](http://resteasy.jboss.org/) - Fully certified and portable implementation of the JAX-RS specification. 328 | * [Retrofit](http://square.github.io/retrofit/) - A type-safe REST client for Java. 329 | * [Spark](http://www.sparkjava.com/) - A Sinatra inspired framework for java. 330 | * [Swagger](https://helloreverb.com/developers/swagger) - Swagger is a specification and complete framework implementation for describing, producing, consuming, and visualizing RESTful web services. 331 | 332 | ## Science 333 | 334 | *Libraries for scientific computing and analysis.* 335 | 336 | * [SCaVis](http://jwork.org/scavis/) - Environment for scientific computation, data analysis and data visualization. 337 | 338 | ## Search 339 | 340 | *Engines which index documents for search and analysis.* 341 | 342 | * [Apache Solr](http://lucene.apache.org/solr/) - Full enterprise search engine optimized for high volume traffic. 343 | * [Elasticsearch](http://www.elasticsearch.org/) - Distributed, multitenant-capable full-text search engine with a RESTful web interface and schema-free JSON documents. 344 | 345 | ## Security 346 | 347 | *Libraries that handle security, authentication, authorization or session management.* 348 | 349 | * [Apache Shiro](http://shiro.apache.org/) - Performs authentication, authorization, cryptography and session management. 350 | * [Cryptomator](http://cryptomator.org/) - Multiplatform transparent client-side encryption of files in the cloud. 351 | * [Keycloak](http://keycloak.jboss.org/) - Integrated SSO and IDM for browser apps and RESTful web services. Currently in beta but looks very promising. 352 | * [PicketLink](http://picketlink.org/) - PicketLink is an umbrella project for security and identity management for Java applications. 353 | * [Spring Security](http://projects.spring.io/spring-security/) - Focuses on authentication/authorization and protects against several attack vectors. 354 | 355 | ## Serialization 356 | 357 | *Libraries that handle serialization with high efficiency.* 358 | 359 | * [FlatBuffers](https://github.com/google/flatbuffers) - Memory efficient serialization library that can access serialized data without unpacking and parsing it. 360 | * [Kryo](https://github.com/EsotericSoftware/kryo) - Fast and efficient object graph serialization framework. 361 | * [MessagePack](https://github.com/msgpack/msgpack-java) - Efficient binary serialization format. 362 | 363 | ## Server 364 | 365 | *Servers which are specifically used to deploy applications.* 366 | 367 | * [Apache Tomcat](http://tomcat.apache.org/) - Robust all-round server for Servlet and JSP. 368 | * [Apache TomEE](http://tomee.apache.org/) - Tomcat plus Java EE. 369 | * [GlassFish](https://glassfish.java.net/) - Open source reference implementation for Java EE sponsored by Oracle. 370 | * [Jetty](http://www.eclipse.org/jetty/) - Lightweight, small server, often embedded in projects. 371 | * [WildFly](http://www.wildfly.org/) - Formerly known as JBoss and developed by Red Hat with extensive Java EE support. 372 | 373 | ## Template Engine 374 | 375 | *Tools which substitute expressions in a template.* 376 | 377 | * [Apache Velocity](http://velocity.apache.org/) - Templates for HTML pages, emails or source code generation in general. 378 | * [FreeMarker](http://freemarker.org/) - General templating engine without any heavyweight or opinionated dependencies. 379 | * [Handlebars.java](http://jknack.github.io/handlebars.java/) - Logic-less and semantic Mustache templates with Java. 380 | * [JavaServer Pages](https://jsp.java.net/) - Common templating for websites with custom tag libraries. 381 | * [Thymeleaf](http://www.thymeleaf.org/) - Aims to be a substitute for JSP and works for XML files in general. 382 | 383 | ## Testing 384 | 385 | *Tools that test from object to interface level including performance and other benchmarks.* 386 | 387 | * [Apache JMeter](http://jmeter.apache.org/) - Functional testing and performance measurements. 388 | * [Arquillian](http://arquillian.org/) - Integration and functional testing platform with integration of Java EE containers. 389 | * [AssertJ](http://joel-costigliola.github.io/assertj/) - Fluent assertions that improve readability. 390 | * [Hamcrest](http://hamcrest.org/JavaHamcrest/) - Matchers that can be combined to create flexible expressions of intent. 391 | * [JMH](http://openjdk.java.net/projects/code-tools/jmh/) - Microbenchmarking tool for the JVM. 392 | * [JUnit](http://junit.org/) - Common testing framework. 393 | * [Mockito](http://code.google.com/p/mockito/) - Creation of test double objects in automated unit tests for the purpose of TDD or BDD. 394 | * [Selenide](http://selenide.org/) - Concise API around Selenium to write stable and readable UI tests. 395 | * [Selenium](http://docs.seleniumhq.org/) - Portable software testing framework for web applications. 396 | * [TestNG](http://testng.org/) - Testing framework. 397 | * [VisualVM](http://visualvm.java.net/) - Visual interface for detailed information about running applications. 398 | 399 | ## Utility 400 | 401 | *Libraries which provide general utility functions.* 402 | 403 | * [args4j](http://args4j.kohsuke.org/) - Command line arguments parser 404 | * [Apache Commons](http://commons.apache.org/) - Provides different general purpose functions like configuration, validation, collections, file upload or XML processing. 405 | * [Guava](http://code.google.com/p/guava-libraries/) - Collections, caching, primitives support, concurrency libraries, common annotations, string processing, I/O, and so forth. 406 | * [javatuples](http://www.javatuples.org/) - Does what it says, although the concept of tuples in general is debatable. 407 | * [JGraphT](http://jgrapht.org/) - A graph library that provides mathematical graph-theory objects and algorithms. 408 | 409 | ## Web Crawling 410 | 411 | *Libraries that analyze the content of websites.* 412 | 413 | * [Apache Nutch](http://nutch.apache.org/) - Highly extensible, highly scalable Web crawler for production environment. 414 | * [Crawler4j](https://code.google.com/p/crawler4j/) - Simple lightweight alternative. 415 | * [JSoup](http://jsoup.org/) - Scrapes, parses, manipulates and cleans HTML. 416 | 417 | ## Web Frameworks 418 | 419 | *Frameworks that handle the communication between the layers of an web application.* 420 | h 421 | * [Apache Tapestry](http://tapestry.apache.org/) - Component oriented framework for creating dynamic, robust, highly scalable web applications in Java. 422 | * [Apache Wicket](http://wicket.apache.org/) - Component-based web application framework similar to Tapestry with a stateful GUI. 423 | * [Google Web Toolkit](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. 424 | * [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. 425 | * [Ninja](http://www.ninjaframework.org/) - Full stack web framework for Java. Rock solid, fast and super productive. 426 | * [Play](http://www.playframework.com/) - Uses convention over configuration, hot code reloading and display of errors in the browser. 427 | * [PrimeFaces](http://primefaces.org/) - JSF framework which has a free and a commercial version with support. Provides several frontend components. 428 | * [Ratpack](http://www.ratpack.io/) - A set of Java libraries that facilitate fast, efficient, evolvable and well tested HTTP applications. 429 | * [Spring Boot](http://projects.spring.io/spring-boot/) - Microframework which simplifies the development of new Spring applications. 430 | * [Spring](http://projects.spring.io/spring-framework/) - Aims to simplify the development with Java EE and provides packages for dependency injection and aspect-oriented programming. 431 | * [Vaadin](https://vaadin.com/) - Event-driven framework build on top of GWT. Uses server-side architecture with Ajax on the client-side. 432 | 433 | # Resources 434 | 435 | ## Communities 436 | 437 | *Active discussions.* 438 | 439 | * [r/java](http://www.reddit.com/r/java) - Subreddit for the Java community. 440 | * [stackoverflow](http://stackoverflow.com/questions/tagged/java) - Question/answer platform. 441 | 442 | ## Influential Books 443 | 444 | *Books about Java that had a high impact and are still worth reading.* 445 | 446 | * [Effective Java (2nd Edition)](http://www.amazon.com/Effective-Java-Edition-Joshua-Bloch/dp/0321356683) 447 | * [Java Concurrency in Practice](http://www.amazon.com/Java-Concurrency-Practice-Brian-Goetz/dp/0321349601) 448 | * [Thinking in Java](http://www.amazon.com/Thinking-Java-Edition-Bruce-Eckel/dp/0131872486) 449 | 450 | ## Podcasts 451 | 452 | *Something to listen to while programming.* 453 | 454 | * [The Java Posse](http://www.javaposse.com/) (discontinued as of 02/2015) 455 | 456 | ## Twitter 457 | 458 | *Active accounts to follow.* 459 | 460 | * [Adam Bien](https://twitter.com/AdamBien/) - Freelancer: Author, JavaONE Rockstar Speaker, Consultant, Java Champion. 461 | * [Antonio Goncalves](https://twitter.com/agoncal/) - Java Champion, JUG Leader, Devoxx France, Java EE 6/7, JCP, Author. 462 | * [Arun Gupta](https://twitter.com/arungupta/) - Java Champion, JavaOne Rockstar, UG Leader, Devoxx4Kids-er, Red Hatter. 463 | * [Bruno Borges](https://twitter.com/brunoborges) - Product Manager/Java Jock at Oracle. 464 | * [Ed Burns](https://twitter.com/edburns) - Consulting Member of the Technical Staff at Oracle. 465 | * [Eugen Paraschiv](https://twitter.com/baeldung) - Author of the Spring Security Course. 466 | * [James Weaver](https://twitter.com/JavaFXpert) - Java/JavaFX/IoT developer, author and speaker. 467 | * [Java EE](https://twitter.com/Java_EE/) - Official Java EE Twitter account. 468 | * [Java Magazine](https://twitter.com/Oraclejavamag) - Official Java Magazine account. 469 | * [Java.net](https://twitter.com/javanetbuzz/) - Official Java.net account. 470 | * [Java](https://twitter.com/java/) - Official Java Twitter account. 471 | * [Javin Paul](https://twitter.com/javinpaul) - Well-known Java blogger. 472 | * [Lukas Eder](https://twitter.com/lukaseder) - Founder and CEO Data Geekery (jOOQ). 473 | * [Mario Fusco](https://twitter.com/mariofusco) - RedHatter, JUG coordinator, frequent speaker and author. 474 | * [Mark Reinhold](https://twitter.com/mreinhold) - Chief Architect, Java Platform Group, Oracle. 475 | * [Martijn Verburg](https://twitter.com/karianna) - London JUG co-leader, speaker, author, Java Champion and much more. 476 | * [OpenJDK](https://twitter.com/OpenJDK) - Official OpenJDK account. 477 | * [Reza Rahman](https://twitter.com/reza_rahman) - Java EE/GlassFish/WebLogic evangelist, author, speaker, open source hacker. 478 | * [Simon Maple](https://twitter.com/sjmaple) - Java Champion, virtualJUG founder, LJC leader, RebelLabs author. 479 | * [Stephen Colebourne](https://twitter.com/jodastephen) - Java Champion, speaker. 480 | * [Tim Boudreau](https://twitter.com/kablosna) - Author and NetBeans guru. 481 | * [Trisha Gee](https://twitter.com/trisha_gee) - Java Champion and speaker. 482 | 483 | ## Websites 484 | 485 | *Sites to read.* 486 | 487 | * [Android Arsenal](https://android-arsenal.com) 488 | * [Google Java Style](http://google-styleguide.googlecode.com/svn/trunk/javaguide.html) 489 | * [InfoQ](http://www.infoq.com/) 490 | * [Java Code Geeks](http://www.javacodegeeks.com/) 491 | * [Java.net](http://java.net/) 492 | * [Javalobby](http://java.dzone.com/) 493 | * [JavaWorld](http://www.javaworld.com/) 494 | * [JAXenter](http://jaxenter.com/) 495 | * [RebelLabs](http://zeroturnaround.com/rebellabs/) 496 | * [The Java Specialist' Newsletter](http://www.javaspecialists.eu/archive/archive.jsp) 497 | * [TheServerSide.com](http://www.theserverside.com/) 498 | * [Thoughts On Java](http://www.thoughts-on-java.org/) 499 | * [Voxxed](https://www.voxxed.com/) 500 | 501 | # Contributing 502 | 503 | Contributions are very welcome! 504 | 505 | Please have a look at [CONTRIBUTING](https://github.com/akullpp/awesome-java/blob/master/CONTRIBUTING.md) for guidelines. 506 | --------------------------------------------------------------------------------