What Source Control tool do you use? And more on TFS Vs. Open Source

Regarding my last post, Oren (Ayende) points out that regarding TFS's features, he can either find a match for them in open source land, or he doesn't really care about them. What bugs me is whether, assuming you can find and create such a solution out of a package of open source applications working together that operate with the same level of integration as TFS, can you still handle the things that matter to the organization using your solution: