Debian Jr.
An internal Debian project that gathers packages suitable for children. I was told it only had The Gimp, which can be difficult, even for adults!
Tux4Kids
Sam Hart, of the 'Tux4Kids' project had asked me in 2001 if I would help write 'Tux, of Math Command' (TuxMath), an arcade-style math quiz game. Tux Paint seemed well-suited.
WebFX
I enjoy writing and learning about graphics code. In 1997 I wrote 'WebFX,' a web-based image manipulation tool.