RenderDoc is a stand-alone graphics debugging tool
A book reader for Nintendo DS
Convert BMP images into Sixel images
A homebrew video suite for game consoles
Simple utility to convert PNG to JPEG
Cross Platform GUI Toolkit
Port of old SDL 1.2 to gamecube.
iButtons for the DS
Demonstrate frequency inversion for speech
Very Powerfull Crossplatform Qt Based Music Note Editor[Still Planing]
3D Engine technology with partial tools developing kit.