Software development
This is mainly devoted to software: code I've written, stuff I've written about my code. There's projects I've contributed code to, and some project ideas that don't have code yet too.
Older stuff
There's also some older stuff here, including Bottlenose, a native HTML/javascript UI, and Telepresence, videoconferencing, and FractalTrees X, toy fractal software, and Riven Sound Hack, some ancient Java
Software found elsewhere
Semacode : practical ubiquitous computing - URL barcodes and ubiquitous computing and all that stuff.
Open ICT - intended to provide infrastructure for ICT development all over the world.