Microsoft has WSUS which is great for the Microsoft products it supports (and it doesn't support all Microsoft products), but in reality companies have many applications from other vendors.
Is there a patch/update management server similar to WSUS, but that works with lots of vendors or developers?
Update
Some good soul decided to change the server tag to a Windows tag - Note that this is NOT just for Windows. If you know a good patch server that runs on Linux or Apple then those are perfect too.