GitHub Last Commit Badge is a free Chrome extension designed to enhance the user experience on GitHub by adding a visual indicator of the last commit date for repositories. This feature allows users to quickly assess the activity level of a repository at a glance, making it easier to identify projects that may be stale or inactive.

The extension is particularly useful for developers and contributors who want to keep track of repository updates without navigating through multiple pages. By providing a last commit badge, it streamlines the process of evaluating the relevance and currency of GitHub projects, thus facilitating better decision-making regarding collaboration and contributions.