Gitnu is a free Chrome add-on designed to provide users with an interactive Git terminal experience directly within the browser. This tool allows for essential Git operations such as cloning repositories, checking logs, and managing branches. Users can execute commands like 'git commit' and 'git push' with ease, although it's important to note that the app currently supports pushing only to the master branch. The interface is user-friendly, catering to those familiar with Emacs-style keyboard shortcuts, making it accessible for both novice and experienced users.

While Gitnu offers a variety of functionalities like checking the status of repositories and viewing commit logs with pagination, it is worth mentioning that some features are still under development, which may lead to unexpected behavior. Users should exercise caution and avoid using Gitnu for critical data unless it is backed up, as there may be instances where certain operations do not perform as expected.