Pega Robotics Studio itself does not come with any source control. If you are using the Plugin to Visual Studio 2015, then any source control available for that platform should work. The only caveat is that you should use exclusive checkout (i.e. do not let source control merge any changes to any files that you and another developer share). If you are using the Studio stand-alone version, then your options on integrating the Visual Studio Shell with source control are limited. SVN can use Windows Explorer though, so it is perfect for Studio. Again, just be sure that you don't try to merge any changes to any of the files as that will corrupt them.