1. CSS

    Instantly check or copy computed CSS from any element

  2. All your articles, photos, video & content from web & apps in one place.

  3. RGH

    Browser extension that makes GitHub cleaner & more powerful

  4. Build cross browser extensions for Chrome, Firefox & Opera

  5. Take control of all your Facebook data

  6. Browser extension that automagically searches for coupons

  7. Colorful filters uses css blend modes inspired by Spotify

  8. FF

    A browser extension to identify and try fonts on any website

  9. Make TweetDeck even better with emojis, thumbnails and more

  10. ADS

    Search great domain names for your website in seconds.

  11. TT

    Automatically close tabs you have ignored for too long

  12. Take, save & share screenshots without leaving Firefox