Personal Projects

I have quite a few software projects on github.The most interesting are probably

pfds
Functional data strutures for R6RS Scheme.
fectors
Persistent vectors for R6RS Scheme.
quickcheck
Aims to be a quickcheck a-like for R6RS Scheme.
guile-gdbm
Bindings to GDBM for Guile. Maybe not all that useful, but it serves as a nice example of Guile's FFI.

Other Software

I am not necessarily affiliated with these, but I do recommend them.

guile
An implementation of the scheme programming language. I occasionally submit bugs and patches, and try to help out on the mailing list and IRC channel. If you can, use 2.0, it's much better.
dorodango/guildhall
A package manager for Guile and other R6RS Schemes. Needs more love.
spells
A library of portable scheme code put together by Andreas Rottman.
wak
Ditto
racket
A scheme derivative that is probably the most exciting lisp in current use. Continues to push macros in the right direction. If you aren't going to use guile, then you should use this :).
GHC
An optimising compiler for Haskell written in Haskell. If I weren't so fond of Scheme, I'd be pushing Haskell.
gnu emacs
Text Editor / Religion / Lifestyle
elnode
Asynchronous web framework for Emacs Lisp. Yes, you did read that right.
rudybot
IRC Bot I'm fond of playing with on the #emacs freenode channel.