Note that the stats only include the main O2 Platform code and the commits made to GitHub (the multiple O2 Forks and past SVN stats are not there)
Ohah seem a really nice way to map OpenSource projects and its activity status, and Simon+Samantha are doing a great job at creating a nice area to map the current OWASP Projects: https://www.ohloh.net/orgs/OWASP