Vertical Tabs Popup is a free Chrome extension developed by frankmannen. It falls under the Browsers category and the Add-ons & Tools subcategory. This extension provides a simple and convenient way to view tabs in a vertical manner within a popup window.

With Vertical Tabs Popup, users can easily organize and navigate their open tabs in a vertical format. The extension allows for the placement of the popup window to the side of the main Google Chrome window, providing a seamless browsing experience.

One of the key features of Vertical Tabs Popup is its ability to remember the position and size of the popup window after it has been set for the first time. This ensures that users can customize their tab viewing experience to suit their preferences.

This extension is similar to Vertical Tabs for Firefox and offers a straightforward solution for those who prefer a vertical tab layout in their Chrome browser. It is a lightweight and user-friendly tool that enhances tab management within the browser.

Please note that there have been revisions to the extension, with the latest version being 0.14 released on May 13, 2014. This update fixed a bug related to html-characters in tab titles. Additionally, version 0.12, released on July 26, 2013, removed the time-based auto-refresh on tabs and added support for multiple windows.

Overall, Vertical Tabs Popup is a useful Chrome extension for users who prefer a vertical tab layout and easy tab navigation within the browser.