Tabs Outliner - Next Generation Session, Windows, Tabs Manager and a TooManyTabs Solution That Really Works.
Tab Stash - Tab Stash is a browser extension that helps you keep your tabs straight, saved, and restore them later.
Tab Session Manager - Save and restore the state of windows and tabs.
Tablerone - Browser extension for saving, organising, and exporting tabs. Save multiple tabs with one click. Get more done with a clean browser.
Session Buddy - Manage Your Browser Sessions
tabExtend - Easily save tabs and quickly create notes in your browser