When comparing Gitg vs tig, the Slant community recommends Gitg for most people. In the question“What are the best graphical git clients for Linux?” Gitg is ranked 3rd while tig is ranked 5th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Client side decoration (CSD)
Pro Beautiful and simple
The UI is very straightforward, once you open it, you can browse your computer to find an existing git repository and open it in the app. Once opened you can browse commits and view remotes immediately. It also allows you to browse the files and preview them.
There's also a commit view which shows past commit messages, as well as unstaged and untracked commits.
Pro Allows you to stay in the terminal
If you prefer to do most of your development inside the terminal, changing windows to move to a GUI git client can be annoying. Since tig runs inside the terminal, that's avoided.
Pro Fast
Pro Vim-like bindings
Pro Available in Homebrew
Can easily be installed with homebrew simply by running brew install tig
Pro Works on any platform
Cons
Con Some git features are missing
There are some key/authentication issues.
Con Slow on large repositories
Con Steeper barrier to entry as compared to a GUI solution
Since you have to get used to working in the terminal (if you are not already used to doing that) and learn the commands, it has a steeper learning curve than GUI clients which are usually more intuitive and easier to grasp.