SmartGit/Hg is a graphical front-end for the distributed version control systems Git and Mercurial, which also can be used to work with Subversion repositories. SmartGit/Hg runs on Windows, Mac OS X and Linux.
SmartGit/Hg can be used free of charge for non-commercial purposes (e.g. OpenSource developers). For commercial use or if support is needed, you can purchase a commercial license. The commercial license includes 1 year of free updates and either 90 days or 1 year of e-mail support.