Web Developer :: Firefox Add-ons. Tab Mix Plus :: Firefox Add-ons. YouTube mp3 :: Firefox Add-ons. Add to Search Bar :: Firefox Add-ons. Adblock Plus :: Firefox Add-ons. Brief - a feed reading extension for Firefox. Google Shortcuts - All Google Services at a glance :: Firefox Add-ons. Firebug :: Firefox Add-ons. Greasemonkey :: Firefox Add-ons. ImTranslator - Übersetzer :: Firefox Add-ons. FireShot :: Firefox Add-ons. SearchPreview :: Firefox Add-ons.