Powerful, mature open-source cross-platform game engine for Python
OptiScaler bridges upscaling/frame gen across GPUs
GLScene Engine for Delphi & C++Builder VCL Windows 32/64
2D Game Engine with Lua Scripting made on top of SFML
Dungeon free resources (terrain & roguelike generation)
.NET wrapper for the Irrlicht Engine
C++ Framework for slot machine games
WGFX 2D Game Engine
visual ping monitor in TNA(taskbar notification area)