SmartGit is a Git client for Windows, Mac and Linux. It is free for non-commercial use, provides a graphical access to Git repositories and can access Subversion. Developed by Syntevo
License: Free Personal
SourceTree is a free, user-friendly Git GUI that excels in simplicity and ease of use, making it ideal for beginners. In contrast, SmartGit offers advanced features and flexibility, catering to more experienced users and larger projects, but comes with a steeper learning curve and a paid model for commercial use.