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.
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.
Since it's not an integration for a specific IDE like Visual Studio, Eclipse or others, you can use it with whatever development tools you like.
As a Subversion client, TortoiseSVN has all the features of Subversion itself, including:
- Most current CVS features.
- Directories, renames, and file meta-data are versioned.
- Commits are truly atomic.
- Branching and tagging are cheap (constant time) operations.
- Efficient handling of binary files.
- BUG: repo browser doesn't handle putty session names.
- BUG: Apply patch marks deleted files as "missing".
- BUG: TortoiseMerge truncates long lines.
- BUG: log dialog export uses wrong files when sorted.
- BUG: tripple-click on empty space crashes TortoiseMerge.
- BUG: diff uses wrong tool in case the filename matches a registered extension.
- BUG: log dialog does not refresh to HEAD.
- BUG: overlays not shown if wc contains unversioned folders.
- CHG: use crashrpt.
- BUG: Error when creating a branch/tag from log dialog.
- BUG: context commands for externals can fail.
- BUG: commit dialog fails to enable OK button.
- BUG: Global Ignore Broken for Directories.
- BUG: 'show log' fails for deleted entry.