uniqtabs (Unique Tabs) has options to sort tabs by title and URL, and remove duplicate tabs.
Sort/deduplicate when a key combination is pressed (default: Ctrl+Shift+Space).

Reviews/comments are appreciated, however bug reports and feature suggestions are better filed at the project's issue tracker.

Install

• License: Mozilla Public License 2.0
• Weekly downloads: 1
• Average daily users: 34
• Rating: 3.5/5 of 8 ratings
• Created: 2013-02-16 01:16:42
• Last updated: 2023-07-12 13:40:29
• Homepage: https://github.com/Mitch-1-2/uniqtabs
• Support site and email
• Orig: https://addons.mozilla.org/en-US/firefox/addon/uniqtabs/
• API: uniqtabs@mitchellfield.id.au