Tabbie - The missing tab manager for Chrome
Firefox Sync - Bring your Firefox bookmarks, tabs, or passwords wherever you go with Firefox Sync. Share between computers and mobile devices. Get Firefox now!
Go to Tab - Manage your chrome tabs easily when you're multitasking
Raindrop.io - All your articles, photos, video & content from web & apps in one place.
Snooze Tabby - A simple way to snooze your tabs for later
Diigo - Diigo is a powerful research tool and a knowledge-sharing community