What is Version Control Version control is a tool used to collaborate between people working on a codebase. The most popular version control system (VCS) tool is called Git. We will look into how Git has made open source collaboration easier and how to use this useful tool. Background Git was originally developed in 2005 by Linus Torvalds, the creator of Linux. Before those days, a lot of development teams would pass files around through email, floppy disks, and archived files.