A free, light-weight system monitor for X on Linux and BSD, that displays any information on your desktop. Conky was originally forked from torsmo and is licensed under the GPL. Called "one of the best maintained, and definitely one of the most useful, programs in the world of open source" by Linux Magazine.
A file hosting application I created with some help from David Shakaryan. It includes a Firefox extension I wrote which is now maintained by Jeff Glover.
As of May 2013, I've stopped maintaining Omploader. The code is available on GitHub for those interested.
I've contributed to various other projects as well. Here's a sample dataset from the 2015 GitHub Archive which lists some of my public GitHub contributions (from this BigTable query).