Tabs Outliner - Next Generation Session, Windows, Tabs Manager and a TooManyTabs Solution That Really Works.
Google Forms - Simple web forms from Google.
Tab Utilities - Tab Utilities is an ultimate tab solution for all kind of users who want to manage their tab, create multiple session and search for new tabs, etc.
poll.ly - your perfect partner to gather ideas and opinions in real time
Tree Style Tab - Tree Style Tab is an all-in-one Firefox extension that provides ability in order to operate tabs as a tree.
Stay-Open Menu - Facilitates opening multiple tabs from the Bookmarks Menu and various other bookmark/history...