Calliope (playlist toolkit)
Calliope is a research project to create an open source music recommendations engine. See my blog articles about Calliope and join the discussion on the Beets.io forum.
Tracker (search engine)
I co-maintain the Tracker search engine within GNOME. See my blog articles about Tracker for more information.
Commandline tool to download audio files from Blooper pedal.
Twitter Without Infinite Scroll
Firefox extension for users of Twitter.com who don’t like Infinite Scroll.
A working prototype of a desktop app for searching and browsing an archive of lesson plans.