Could be something as complex as MS Project or simple as a shared spreadsheet with rows for each project and columns for each milestone or for things like ETA, dependencies we’re blocked on, escalations needed, scope changes, etc. Not sure how that could gel well with a source control tool but I’m all ears!

I think 1/4 of the challenge is what tool to use and 3/4 is convincing and motivating people to be reliable and forthcoming with accurate information. A good project manager demonstrates he or she can add value, unblock things, escalate and communicate appropriately, and not just be the Project Police.