GitHubCleanup is a free Chrome extension developed by CenterOrbit. It falls under the category of Browsers and is a subcategory of Add-ons & Tools.

This extension aims to remove unnecessary comments from GitHub issue screens. It specifically targets comments such as "+1", "thanks", and even the popular emoji. These comments often clutter the discussion and distract from the primary topic, without adding any real value. This can be especially problematic on popular, new, open source projects where the number of comments can quickly become overwhelming.

One interesting feature of GitHubCleanup is the counter displayed over the Chrome bar icon. This counter keeps track of the number of needless comments the extension has removed since its installation. This provides users with a fun way to see the impact of the extension and appreciate the clutter-free GitHub issue screens it helps create.