Tab Mix Plus is a Firefox add-on designed to enhance the browser's tab-browsing capabilities. It allows users to customize and improve the tabbed browsing experience by providing features such as tab clicking options, tab duplication, undo closed tabs, and more. It also allows users to manage their tabs in a more efficient and organized manner, with options to save and restore tab sessions, and more. Additionally, it provides a variety of security and privacy-related features, such as the ability to block pop-ups, block images and scripts, and more.
Adds another window that makes a total mess.