Ohloh’s numbers are a bit skewed because of the way the way it counts contributions and because we re-organized our repositories and build system last year. Developers started working exclusively in sandboxes and the documentation output (HTML and PDFs) is no longer checked into the source tree; so the number of commits and volume has decreased considerably. If you look at the statistics, you see that it considers Zenoss 72% HTML, which is documentation that is no longer checked into Subversion (and Python isn’t even listed in our top 4 languages, despite being a Python application). There is a major-rearchitecting going on right (converting to Python 2.6 and Zope 2.12) now that is about to move into Subversion trunk and a large spike will be coming in the next few days. The next major release of Zenoss Core has a tremendous amount of new functionality. I’m quite certain the statistics for our ZenPack repository are being left out, since they’re in another repository and came online last January (http://zenpacks.zenoss.org 2600 files). I expect that if you were to account for the over-counting of faulty data, include all of our repositories and move the window to the end of March you would get a very different graph.

http://www.ohloh.net/p/OpenNMS/analyses/latest

It’s a slightly different graph.