Simplified Tab Groups
This Firefox addon provides tab grouping features similar to the removed TabView/TabGroups/Panorama…
8 Alternatives To Simplified Tab Groups
Conex
TabGroups married with Tab Containers and bookmark & history search
Habi
Build habits. Change your life.
Open Tabs Next to Current
Open new tabs to the right of the current one.
Session Box
Using websites with multiple accounts at the same time is made easy.
Simple Tab Groups
Create, modify and quick change tab groups. Features:
Tab Mix Plus
Tab Mix Plus enhances Firefox’s tab browsing capabilities.
Tab Workspaces
Organize your tabs into workspaces.
Tree Style Tab
Tree Style Tab is an all-in-one Firefox extension that provides ability in order to operate tabs as a tree.