The flexible game engine
The Tiny JavaScript Game Engine That Can!
Cross-platform, open source, and super fast MUD client with scripting
Edit BZFlag world maps with 3D preview
Domination is a game that is a bit like the board game Risk
GEDKeeper - opensource and crossplatform genealogy management program
Delphi Java - VRCalc++ OOSL (Script) and + (Binary Exec Distro)
Ze Text Adventure game Builder : Create as you play !
Willy the Worm is an 2d side scroller arcade stye game
SDL based generic 2D game engine
LDraw™ editor for LEGO® style digital building instructions.
Tool for managing a kendo tournament
A cross-platform, open-source, pure C game engine for mobile game
OpenGL port of the classic 6dof 3D shooter Descent
2D Game Engine with Lua Scripting made on top of SFML
Dialog box to edit Exif comment into images
Virtual paper folding program
A JavaScript game library to quickly develop board games for the web
IRB is a game creation toolkit
2D ARPG Engine
Godot is a fully featured, open source, MIT licensed, game engine.
Multi-threaded 2D Renderer licensed under the Mozilla Public License