A re-implementation of Freelancer
Creative cellular automata browser game
Stream Processing and Complex Event Processing Engine
Modern Load Testing as Code
Parallel OS, with GUI, Terminal, OO Assembler, Class libraries
an Open Source BPMN 2.0 / DMN 1.1 Modeler
HARFANG 3D source code public repository
An open source process simulator
Box2d Flash Alchemy Port + World Construction Kit
Java simulation of Babbage's Analytical Engine