Extensions switcher - Menu for quick extensions control
Raindrop.io - All your articles, photos, video & content from web & apps in one place.
Mozilla Add-ons - Download Firefox extensions and themes. They’re like apps for your browser. They can block annoying ads, protect passwords, change browser appearance, and more.
start.me - A Modern-day bookmark manager. A place for your favorites. A news feed (RSS) reader. A browser startpage. A portal for your team.
Extensity - Quickly enable/disable Google Chrome extensions.
Pocket - When you find something you want to view later, put it in Pocket.