Things I’ve been working on in 2011:

Elephant Tracks: Store and consolidate your geo checkins (as well as their comments and photos) from Gowalla, Facebook, and Foursquare into your Evernote account. Built as part of the Evernote Developer Competition. (Link)

Charity Chirpa: Matches Twitter users to charity projects. Built as part of the Donors Choose Hacking Education contest where it won first prize in the “Wildcard” category. It was 1 of 8 finalists out of over 50 entries. (Link)

Book Chirpa: Aggregates and displays Twitter mentions of O’Reilly technical books. Built as part of the O’Reilly/Fluidinfo Writable API contest where it won First Prize. (Link)

Flock Watcher: Categorizes and simplifies your Facebook news feed. (Link)