Do you know any version controllers like SVN, CVS, etc.?

Version controller SVN, CVS is two versions of the controller, need to be associated with the SVN, CVS server, SCM is in Xcode configuration version control of the place, the principle of version control is a and b at the same time to develop a project, a write the day after the code to submit the code to the server,

b To do the first time from the server to get the latest version, you can continue to do, if A and B are to submit to the server, and also modify the same method, there will be code conflicts, if a first commit, then B commits, the server can prompt the conflict of code, B can clearly see,

and make the corresponding changes or integration after the submission.

Do you know any version controllers like SVN, CVS, etc.?