Welcome to corporate. For business group A, I use RCS. For business group B, I use SVN. For my own personal stuff I use git. No joke. Mercurial, Perforce, Cl

Welcome to corporate. For business group A, I use RCS. For business group B, I use SVN. For my own personal stuff I use git. No joke. Mercurial, Perforce, Clearcase are also in use depending who you ask. I'm sure we have some CVS still in use somewhere, and I think Bazaar may be installed, though I don't know who uses it. Basically if it exists, we have it installed, and someone might be using it, somewhere among the order of 100k employees worldwide.