Tabs Outliner
Next Generation Session, Windows, Tabs Manager and a TooManyTabs Solution That Really Works.
Replaces the "Undo Close Tab" menu item with the "Recently Closed Tabs" sub-menu.
Replaces the "Undo Close Tab" menu item with the "Recently Closed Tabs" submenu.
Admittedly, this addon doesn't do much, but if you use tabs a lot it will make your workflow faster. You'll wonder how you did without it.
tabbed-browsing tabs-management firefox tabs
Next Generation Session, Windows, Tabs Manager and a TooManyTabs Solution That Really Works.
Freemium Mac OS X Windows Linux Chrome
Tab Mix Plus enhances Firefox's tab browsing capabilities. It includes such features as duplicating tabs, controlling tab focus, tab clicking options, undo closed tabs and windows, plus much more.
Free Open Source Mac OS X Windows Linux Firefox
Open Bookmarks/History/Homepage/URL/Search in new tabs, and more utilities for tabbed browsing, including open tab next, focus related/last visited tab, protect/lock/faviconize/pin tab, multiple tab handler, tab clicking options, etc.
Free Open Source Mac OS X Windows Linux Firefox Waterfox Pale Moon
Always open new tabs to the right of the current one(which is not the same as setting browser.tabs.insertRelatedAfterCurrent to true).
Free Mac OS X Windows Linux Firefox
Detects and automatically closes duplicate tabs.
Free Open Source Self-Hosted Firefox