We've been using ChangeMan(PVCS) from Serena as our version control ,However PVCS is only integrated with QC8.0 and before.
currently we are looking for an open source that supports QC9.0, I found Subversion with connecter from Collbnet would work the problem is this connecter won't work with Subversion the open source and you have to purchase the platform from Collbnet in order to get the connector.
any idea of any free version control which can be integrated with QC9.0
"I realize it's an error, but no one is going to try to do that!"
From "Top 10 Stupid Comments from Developers".