I feel like these tools are invaluable as they help to keep track of changes in your code. There are different ones out there and I'm curious to know what you are using.

 

I'm using Git and before coming across it or VCS in general, I would have many files of the same program with different changes.

Version Control Systems (VCS) are indeed a game changer for so many. I would suggest to use Mercurial, Subversion (SVN) or Perforce as well.

I haven't tried those other systems, but I've come across SVN. It seems easier to work with since everything is located in one spot. I'd have to try it out.

 

Do you have any perference?