Free and Open Source, Distributed, RESTful Search Engine

Ghidra is a software reverse engineering (SRE) framework

Termux - a terminal emulator application for Android OS extendible by variety of packages.

Netty project - an event-driven asynchronous network application framework

A browser automation framework and ecosystem.

Open Source Identity and Access Management For Modern Applications and Services

Apollo is a reliable configuration management system suitable for microservice configuration management scenarios.

Event Driven Orchestration & Scheduling Platform for Mission Critical Applications

a fast, scalable, multi-language and extensible build system

Desktop/Android/HTML5/iOS Java game development framework

Open source alternative to Auth0 / Firebase Auth / AWS Cognito

Cryptomator for Windows, macOS, and Linux: Secure client-side encryption for your cloud storage, ensuring privacy and control over your data.

Access your entire server infrastructure from your local desktop

Very spicy additions to the Java programming language.

Free implementation of Play Services

Generate diagrams from textual description

The most widely used, high performance Minecraft server that aims to fix gameplay and mechanics inconsistencies

OpenRefine is a free, open source power tool for working with messy data and improving it

CoreNLP: A Java suite of core NLP tools for tokenization, sentence segmentation, NER, parsing, coreference, sentiment analysis, etc.

Test Automation Made Simple

Apache Iceberg

MCP Server for Ghidra

Enterprise job scheduling middleware with distributed computing ability.

An annotation processor for generating type-safe bean mappers

Digital logic design tool and simulator

Runtime code generation for the Java virtual machine.

Gephi - The Open Graph Viz Platform

Open source routing engine for OpenStreetMap. Use it as Java library or standalone web server.

Statistical Machine Intelligence & Learning Engine

Android Asynchronous Networking and Image Loading