Tab-Doppelganger is a free Chrome extension developed by Maciej. It falls under the category of Browsers and is specifically classified as an Add-ons & Tools. This extension is designed to help users easily identify and manage duplicate tabs in their browser.

With Tab-Doppelganger, you no longer have to worry about accidentally opening multiple tabs with the same URL. The extension lists down and groups all your tabs with the same origin, making it easy to identify duplicates. You can access this list in the extension's popup, where you can navigate or close the tabs directly.

One of the standout features of Tab-Doppelganger is its notification system. Whenever you open a new tab with the same origin as an existing tab, you will be prompted with a notification. Clicking on the notification automatically closes all other instances of tabs with the same URL. This feature helps you keep your browser clutter-free and ensures you don't waste time navigating through multiple identical tabs.

Tab-Doppelganger is a valuable tool for those who frequently work with multiple tabs and want to maintain an organized browsing experience. It simplifies the process of managing duplicate tabs and improves overall productivity. Best of all, it's completely free to use!