Sidebery
OneTab
Tree Style Tab
Session Buddy
Tabs Outliner
Firefox Multi-account Containers
Workona
Simple Tab Groups
Tabd
Tabs Outliner
OneTab
Session Box
Kurator
Toby
Session Buddy
tabExtend
Sidebery TabdOneTab - Whenever you find yourself with too many tabs, click the OneTab icon to convert all of your tabs into a list. When you need to access the tabs again, you can either restore them individually or all at once.
Tabs Outliner - Next Generation Session, Windows, Tabs Manager and a TooManyTabs Solution That Really Works.
Tree Style Tab - Tree Style Tab is an all-in-one Firefox extension that provides ability in order to operate tabs as a tree.
Session Buddy - Manage Your Browser Sessions
Session Box - Using websites with multiple accounts at the same time is made easy.
Kurator - The premier Chrome extension for savvy researchers and publishers alike. Curate your interest and publish to your website, newsletter and social media sites directly from the browser.