Tab ReTitle is a Firefox extension that enhances tab title customization for users. This subscription-based tool enables easy renaming of browser tabs with a simple click, allowing for persistent titles across sessions and device syncing for a seamless experience. Users can set domain-level titles, temporary titles, and even lock specific titles to tabs, facilitating a tailored browsing environment.

Additional features include keyboard shortcuts, context menu options, and the ability to utilize titles from saved bookmarks. Advanced users can take advantage of regex capture and replacements. However, there are known limitations with certain websites and Firefox's PDF viewer that restrict title changes for security purposes. Overall, Tab ReTitle offers a comprehensive solution for users looking to personalize their tab management.