TooManyTabs - Ever tried having 20 tabs or more open in Chrome?
Linkman - Linkman Pro allows for managing large amount of URLs in its own database.
Tab Wrangler - Automatically closes inactive browser tabs
Firefox Sync - Bring your Firefox bookmarks, tabs, or passwords wherever you go with Firefox Sync. Share between computers and mobile devices. Get Firefox now!
OneTab - 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.
Raindrop.io - All your articles, photos, video & content from web & apps in one place.