Pro Smart embedded difference viewer
When the changes affect only a few characters in a line of code, the embedded difference viewers in the majority of competitors (such as SourceTree) show the whole line as removed and re-added. SmartGit highlights the characters that have been removed / added, so they are easier to read.
Pro Uncluttered UI
SmartGit has a rather clean and uncluttered user interface. All the most useful tools and information are displayed at all times or are otherwise just a couple of clicks away.
All repositories are displayed in the sidebar and through a tabbed interface you can view various info about a specific repository (files, branches, branch graph, etc). The most used git commands like
merge are always available on top.
Pro Can be integrated with Github, Bitbucket, and Atlassian Stash
Using OAuth, you can connect SmartGit with your accounts in Github, Bitbucket, or Stash and access the remote repositories there. You can then clone, fork, commit or push to your remote repositories from inside SmartGit. You can also view and manage pull requests for your open source projects from SmartGit.
Pro Side by side comparison
The best side by side comparison in any Git GUI. You can edit and do line by line reverts, something that can be taken for granted and you'd be surprised when other clients don't have these features. The 3-way side by side merge for conflicts is also a breeze.