Mozilla Code
This is all the stuff around Mozilla/Firefox that I have written.
Most of it is not too fancy, but it is a lot of fun and a good way to get to talk to other developers. Also, I have learned quite a bit writing the extensions and personally I think that XUL is a quite neat cross-platform development environment.
If you like what you see or think it might be worth something, feel free to donate to keep me alive and going :)