Tabbie - The missing tab manager for Chrome
tabExtend - Easily save tabs and quickly create notes in your browser
Workona - A better way to work in the browser.
Lightbeam for Firefox - Mozilla is the not-for-profit behind the lightning fast Firefox browser. We put people over profit to give everyone more power online.
Tab Manager Plus for Chrome - The only tab manager you'll ever need
Ktab - A better way to bookmark