humm maybe a special category of commercial or closed source software could be added ? they would not be at the same level of open source software but people would be able to add them in their stack ... [More] and/or add them in their experience/stats etc. I got an example: I use Flex Builder a lot, the software is based on Eclipse, but it's closed source and commercial but that's only the IDE part on the background the IDE use the Flex SDK which is open source (compilers, frameworks, etc.) As a user I would like to at least be able to add "Flex SDK" in my stack, ideally I would like to add too "Flex Builder" in my stack. Also this would need to be regulated, I would certainly not want to have any commercial software being added to ohloh. but only the ones that the people really use, maybe a system of vote or suggestion ? [Less]