RenderDoc is a stand-alone graphics debugging tool
Game engine supporting many 3D/2D formats and graphic effects
Cerberus Content Management System
Cross Platform GUI Toolkit
Web IDE in single HTML file
Free 32/64/16-bit multi-platform Pascal and Object Pascal compiler
2D Game Engine
Moved to GitHub...
A cross-platform interpreter for many point-and-click adventure games
Cross platform Game Creation Software
The solution to all your problems
Very Powerfull Crossplatform Qt Based Music Note Editor[Still Planing]