Tabs Outliner
Next Generation Session, Windows, Tabs Manager and a TooManyTabs Solution That Really Works.
Always open new tabs to the right of the current one(which is not the same as setting browser.tabs.insertRelatedAfterCurrent to true).
Always open new tabs to the right of the current one(which is not the same as setting browser.tabs.insertRelatedAfterCurrent to true). You can however get the default behaviour by:
configuring the + button in the tab bar to not open tabs to the right of the current one(see addon preferences) using the ctrlaltt keyboard shortcut to open a new tab
firefox-extension new-tab-page tabs tweaking firefox-tab tab-addon tabs-tweak
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
Detects and automatically closes duplicate tabs.
Free Open Source Self-Hosted Firefox
Replaces the "Undo Close Tab" menu item with the "Recently Closed Tabs" sub-menu.
Free Open Source Self-Hosted Firefox
PHP script for generating multilevel tab menu control. Fast, flexible and easy customizable solution for navigation system of your website.
Free Open Source Web Self-Hosted