Tabber is a free Chrome extension developed by mtakvel. It falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. With Tabber, users can easily close unused tabs based on selected domain names.

This extension is designed to help users quickly close tabs that are no longer needed. For example, if you have multiple tabs open with Google search results, you can simply click on the Tabber extension icon and then click the "close all" button next to the google.com domain. This will instantly close all tabs with the selected domain, leaving only the active tab open.

It's important to note that Tabber does not close or display the current active tab. It only closes inactive tabs, allowing users to declutter their browsing experience and improve productivity.

Tabber is a convenient tool for Chrome users who frequently find themselves with numerous tabs open and want a quick and efficient way to close tabs based on domain names.