I get the point that you are trying to make but what you are missing is that the majority of the music that you are mentioning all comes from major labels--which you could equate to proprietary vendors recommending other proprietary vendors--there is a much larger universe out there. Pandora will do its best but from my experience (tried it again today) it doesn't find indie bands...which means they recommend a BigCo label.

But I do agree that there should be some kind of cross-reference library--ie. you want a Java SOAP app so choose Tomcat+Spring+Xfire. Ohloh is sorta interesting, but consider that its pulling a great deal of data from sourceforge.net and you have to take the results with a grain of salt (FYI-I submitted Alfresco for you:)

The relevant information all lies within the community--the crew who write apps and create their own stacks. It seems like an opportunity for a company like SpikeSource or SourceLabs who want to push standardized stacks, despite the realization that everyone runs a different infrastructure.

The biggest problem with the lack of open source "human" utilities (media players, SOAP programs, etc.) is because oepn source developers mainly program for themselves, and for the most part, these developers are only intrested in computers. Simply put, they are a android AI trapped in a human body, sort of speak. They find most things we use for entertainment to be of little to no value to them, and only desire to progressively program more development tools and other high-end mathmatical software than write software for the average Joe Shmoe, mainly because the things that Joe Shmoe wants bore them. Open source developers mostly behave like the Borg from Star Trek. But seriously, would you work on something that bored you?