After doing some search on SO, Google and MSDN forums I've become frustrated that there is so little information for what might seem like an obvious question and possibly a dumb question.
I need to use source control in Visual Studio 2010 Professional. I do not have separate Team Foundation Server 2010. Some people have mentioned SourceSafe? I haven't seen any SourceSafe inside of the Visual Studio 2010 to be honest.
What are some alternatives (preferably free) for source control in Visual Studio 2010? Or is it already integrated in Visual Studio 2010 that I am so blind to have missed that?
EDIT: Thank you everyone, I will go with SVN, in particular AnkhSVN for Visual Studio 2010.