Before all excuse my English, I`m not form an english speaking country.
I`d like to know how control file changes, I mean, I`ll have in charge 3 programmers and it`ll be very difficult to know which classes had been changed and control it.
I`d be amazing that you tell me some kind of software to download (possible open source, or free), or what kind of methods do you use for this problem.

From Argentina, thank you all.
Leonardo Lopez