I went to the UK Linux Expo the other day, and saw
dasher, which is a superb Open Source project for a new text-input system. It looks really promising for disabled computer users and mobile devices; I saw it running on a pocket PC and it beats the crap out of the standard text-recognition system or on-screen keyboard. It's a really elegant system. Anyway, the guys behind the project were really friendly and I thought the least I could do is throw a link up for them. Downloads are available for multiple platforms, including Linux and MacOS X :)
Interesting.