PocketTube - Group YouTube subscriptions into YouTube folder. Video Deck for Youtube. Mark as watched videos. Filter YouTube video. Youtube mode
Yout - YouTube to Mp3 Converter
YouTube - Our mission is to give everyone a voice and show them the world.
Softorino YouTube Converter - Download YouTube video & audio. Watch and listen offline
Subscriptions Grid For YouTube™ - Subscriptions Grid For YouTube™ is a handy browser extension that gives you the opportunity to convert YT improper feed subscription page and make it more convenient to use.
CONV. - Convert YouTube video to MP3, GIF or MP4