Design patterns implemented in Java

Ghidra is a software reverse engineering (SRE) framework

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

Telegram for Android source

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

A tool for reverse engineering Android apk files

Most popular Mocking framework for unit tests written in Java

Examples and server integrations for generating the Swagger API Specification, which enables easy access to your REST API

Tutorials for using RabbitMQ in various ways

The Physical Web: walk up and use anything

Simple OAuth library for Java

LWJGL is a Java library that enables cross-platform access to popular native APIs useful in the development of graphics (OpenGL, Vulkan, bgfx), audio (OpenAL, Opus), parallel computing (OpenCL, CUD…

A library for working with Bitcoin

A decentralized bitcoin exchange network

Example code from Learning Spark book

🔥 HAPI FHIR - Java API for HL7 FHIR Clients and Servers

DEPRECATED! Java implementation of the Ethereum yellowpaper. For JSON-RPC and other client features check Ethereum Harmony

The conformance checker for EPUB publications

IOTA Reference Implementation

Cobertura

Minimalist Java framework for rapidly creating scalable, containerless, RESTful microservices. Ship a production-quality, headless, RESTful API in the shortest time possible. Uses Netty for HTTP, J…

Backblaze Reed-Solomon Implementation in Java

Platform repository of Consulo. Plugins implementation hold in their repositories

Code, exercises and solutions from the book "Functional Programming in Java"

IzPack - Source Code

ActionScript & MXML language extension for Visual Studio Code. Develop apps for Adobe AIR, Adobe Flash Player, or Apache Royale.

Java implementation of ChromeCast V2 protocol client

A high performance data logging and graphing system for time series data.

a blockchain implementation in 200 lines of code.

Open Java API for OLAP