Things I've built:

• 750books.com, a service to turn a 750 Words export file into a nice PDF suitable for printing as a physical book. Wraps my 750book-script. (Python, Django)
• the web interface to the online catalog of the MIT Science Fiction Society's Library. (Python, WebOb, Tempita, PostgreSQL)
• this web site. (Ikiwiki)

These days most of my personal pet projects live on shared code hosting sites:

• GitHub profile (primary)
• Bitbucket profile

I've been employed to hack on:

• the StreamBase compiler and runtime library
• Bare Metal (a custom Linux distribution based on Fedora Core and VMware), by moka5
• Request Tracker (RT), Hiveminder, and Doxory, by Best Practical Solutions
• rt.cpan.org, also by Best Practical
• Perl modules, most of which were the product of my work at Best Practical

See my résumé for more information.

Open-source projects I like and use, to which I occasionally submit patches:

• Sup, a console-based GMail-like mail client
• BarnOwl, a console-based IM client
• barnowl-twitter, a Twitter plug-in for Barnowl

Open-source projects I've started and hacked on:

• Mancala in C; no longer maintained. How I kept busy in high school.