TortoiseSVN is a really easy to use Revision control / version control / source control software for Windows. It is based on Subversion. TortoiseSVN provides a nice and easy user interface for Subversion.
|Operating System Support||Windows 8, Windows 2012, Windows 2008, Windows Vista, Windows 7, Windows 2003, Windows XP, Windows 2000, Windows 10, Windows 98|
|Available Languages||English, French, Polish, Chinese, Italian, German, Japanese, Spanish|
|Date||Saturday, January 1st 2000|
It is developed under the GPL. Which means it is completely free, including the source code. But just in case you don’t know the GPL too well: you can use TortoiseSVN to develop commercial applications or just use it in your company without any restrictions.