Design patterns implemented in Java

Free and Open Source, Distributed, RESTful Search Engine

Everything you need to know to get the job.

Ghidra is a software reverse engineering (SRE) 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.

Netty project - an event-driven asynchronous network application framework

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

Bind Android views and callbacks to fields and methods.

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…

OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)

FizzBuzz Enterprise Edition is a no-nonsense implementation of FizzBuzz made by serious businessmen for serious business purposes.

A tool for reverse engineering Android apk files

GraalVM compiles Java applications into native executables that start instantly, scale fast, and use fewer compute resources 🚀

IntelliJ IDEA Community Edition & IntelliJ Platform

A fast dependency injector for Android and Java.

Most popular Mocking framework for unit tests written in Java

Vert.x is a tool-kit for building reactive applications on the JVM

Arduino IDE 1.x

Apache Druid: a high performance real-time analytics database.

Stetho is a debug bridge for Android applications, enabling the powerful Chrome Developer Tools and much more.

Change data capture for a variety of databases. Please log issues at https://issues.redhat.com/browse/DBZ.

A configuration as code language with rich validation and tooling.

A simple expressive web framework for java. Spark has a kotlin DSL https://github.com/perwendel/spark-kotlin

Distributed and fault-tolerant realtime computation: stream processing, continuous computation, distributed RPC, and more

Efficient reliable UDP unicast, UDP multicast, and IPC message transport

Runtime code generation for the Java virtual machine.

GraphQL Java implementation

vʌvr (formerly called Javaslang) is a non-commercial, non-profit object-functional library that runs with Java 8+. It aims to reduce the lines of code and increase code quality.

Reformats Java source code to comply with Google Java Style.