My company started to use Team Foundation Service, which is the Team Foundation Server On Cloud. That is free to use up to 5 Users for each project.

I found that is useful for us. That saves the administration effort to manage a Team Foundation Server in our Office and save the cost of hardware. All Server Load goes to Microsoft. In additional, we can always use the latest version of Team Foundation Server. We do not need to worry about upgrading the software and install the patches. Lastly, it has a nice interface for Agile Development. We can create the user stories and do the sprint planning. That is so great! I highly recommend this.

P.S. It support GIT. We started to use it for our PHP projects too.