Design patterns implemented in Java

Spring Boot helps you to create Spring-powered, production-grade applications and services with absolute minimum fuss.

Free and Open Source, Distributed, RESTful Search Engine

All Algorithms implemented in Java

Spring Framework

Google core libraries for Java

Getting Started with Spring Boot 3:

ZXing ("Zebra Crossing") barcode scanning library for Java, Android

Mirror of Apache Kafka

Desktop/Android/HTML5/iOS Java game development framework

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

A tool for reverse engineering Android apk files

This project is deprecated and stale. The latest ExoPlayer code is available in https://github.com/androidx/media

A fast dependency injector for Android and Java.

Apache Hadoop

Most popular Mocking framework for unit tests written in Java

Tools to work with android .dex and java .class files

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

AWS Service registry for resilient mid-tier load balancing and failover.

A collection of source code generators for Java.

Apache Cassandra®

Spring Security

✅ The programmer-friendly testing framework for Java and the JVM

Apache Storm

smali/baksmali

JavaFX Material Design Library

Reformats Java source code to comply with Google Java Style.

Open source version of Google Authenticator (except the Android app)

AIMSICD • Fight IMSI-Catcher, StingRay and silent SMS!

Joda-Time is the widely used replacement for the Java date and time classes prior to Java SE 8.