To try the thousands of add-ons available here, download Mozilla Firefox, a fast, free way to surf the Web!
CloseWelcome to Firefox Add-ons.
Choose from thousands of extra features and styles to make Firefox your own.
CloseReview for Tab Clicking Options by Piotr Konieczny
Rated 4 out of 5 stars
It was the next best thing to Multizilla. Now it appears that even that is dead, as mattstan hack no longer works (the extension installs but the buttons are gone... :(
All we have left is the redone duplicate tab add-on: https://addons.mozilla.org/en-US/seamonkey/addon/156490/
How I miss the days when I was able to duplicate tabs with their history, close all tabs on the right or left side, reopen closed tabs - not only the last one, but select from the list of all closed tabs, when tabs were colorized based on which other tag they were started from... those were the days. Now, frankly, I am forced to use Chrome - not because I want to, but because at least it has the uber-useful reopen closed tab option... sigh.
To create your own collections, you must have a Mozilla Add-ons account.