ohloh.net does a really neat job tracking open-source projects / efforts. It tracks by person, project, language.
Really cool!
My personal (& very small!) contributions to open source can be seen here:
See https://www.ohloh.net/people?sort=kudo_position&q=kaiwan+billimoria
(Note that my actual commits are to the project ‘Linux Kernel 2.6′ and the ‘OpenMoko VisualGPS’ project; their being used in other open source projects makes it show up elsewhere as well…).