Looks like they have some quite interesting graphs and statistics about the Anaconda codebase, going all the way back to 1999:

http://www.ohloh.net/p/anaconda

While some observations seem to be a bit bogus, some recent events - such as newui - are quite nicely visible. :)

They also have data on related projects, such as Pykickstart and Lorax:

http://www.ohloh.net/p/pykickstart http://www.ohloh.net/p/lorax-fedora