Open-source Android/Desktop remake of Civ V
Open source HTML5 game framework that offers WebGL and Canvas
Desktop/Android/HTML5/iOS Java game development framework
One framework for creating powerful cross-platform games
The game engine for everyone
Cross-platform game engine in Rust
Free, cross-platform 2D game engine powered by Haxe and OpenFL
GEDKeeper - opensource and crossplatform genealogy management program
Classic arcade game remake of Swing Plus -Total Mindcontrol
Children's learning programming language Karel the Robot in 3D
Complete ROV Control Suite