SImple, powerful audio tagger for GNU/Linux
Free drawing software for Windows, Mac OS X, and Linux
A world editor for HGE game engine written in python and uses OpenGL.
Access to Irrlicht Engine SDK from assembler, C, Python, Basic, Pascal
Metadata (EXIF, XMP, IPTC) editor, Geotagger, Publisher
cross platform latex-to-bitmap-to-clipboard gui
A GUI tool for creating audio CDs from analog sources.
A GUI foundation for creating U/I based content
Inkscape extension to add and edit GNUplot graphs
A tool written in Python to draw Splines in MAXONs Cinema 4D