Undo|Duplicate Tab is a free Chrome add-on developed by Benni. It falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. With this add-on, you can easily undo the closure of a tab or create a duplicate of your current tab.

One of the main features of Undo|Duplicate Tab is the ability to restore closed tabs. If you accidentally close a tab, you can quickly bring it back with just a few clicks. This feature can be a lifesaver when you need to retrieve important information or revisit a website you were browsing.

Another handy feature of this add-on is the ability to create duplicates of your current tab. With just a click, you can have an exact copy of the page you are currently on. This can be useful when you want to compare information or have multiple instances of the same website open.

The toolbar popup UI of Undo|Duplicate Tab is designed for easy accessibility. It features two buttons - one for undoing closed tabs and another for creating duplicates. This makes it convenient to quickly perform these actions without any hassle.

Overall, Undo|Duplicate Tab is a useful Chrome add-on that provides a simple and efficient way to restore closed tabs and create duplicates. Whether you accidentally close a tab or need multiple instances of a webpage, this add-on has got you covered.