I tried to update the info on Ohloh, but may have botched the job. In fact, DHIS 2 has been registered twice, with quite differing code analysis results:
http://www.ohloh.net/p/dhis2/analyses/latest
http://www.ohloh.net/p/DHIS/analyses/latest
Also wanted to mention that WHO Global Health Observatory data are now available here (more data to be added later), with links to the Indicator and Metadata Registry (IMR)
Knut