Drawpile is a collaborative drawing program that allows multiple users to sketch on the same canvas simultaneously. Drawpile supports the OpenRaster file format and thus works well with other free painting applications such as MyPaint, Krita and GIMP. Five tool slots allow you to prepare brush presets and switch between them quickly.
Icon Mask Maker (IMM) makes high definition Icon and transparent Mask to build Transparent Icons.
OpenGL Development Kit
