Spring Boot

Spring Framework

Google core libraries for Java

RxJava – Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observable sequences for the Java VM.

Just Announced - "Learn Spring Security OAuth":

Netty project - an event-driven asynchronous network application framework

A browser automation framework and ecosystem.

Mirror of Apache Kafka

Telegram for Android source

Hystrix is a latency and fault tolerance library designed to isolate points of access to remote systems, services and 3rd party libraries, stop cascading failure and enable resilience in complex di…

A Java serialization/deserialization library to convert Java Objects into JSON and back

Jenkins automation server

A tool for reverse engineering Android apk files

JDK main-line development https://openjdk.org/projects/jdk

High Performance Inter-Thread Messaging Library

IntelliJ IDEA Community Edition & IntelliJ Platform

A high performance caching library for Java

Most popular Mocking framework for unit tests written in Java

Apache Hadoop

Apache Pulsar - distributed pub-sub messaging system

Very spicy additions to the Java programming language.

Guice (pronounced 'juice') is a lightweight dependency injection framework for Java 11 and above, brought to you by Google.

Java JsonPath implementation

Apache Cassandra®

Spring Security

A fast build system that encourages the creation of small, reusable modules over a variety of platforms and languages.

A programmer-oriented testing framework for Java.

Checkstyle is a development tool to help programmers write Java code that adheres to a coding standard. By default it supports the Google Java Style Guide and Sun Code Conventions, but is highly co…

Test Automation Made Simple

Catch common Java mistakes as compile-time errors