CONV. - Convert YouTube video to MP3, GIF or MP4
Loom - Loom is a screen recording extension for Chrome that gives people the ability to create and share media. Create your own videos using your camera, screen view, and audio. Read more about Loom.
Downie - Video download for OS X. Downie supports at this moment over 1,000 different sites.
Tella - Capture your best work with video. Record in the browser, share instantly.
Yout - YouTube to Mp3 Converter
Vimeo - Vimeo is a social media app that lets you share and capture videos. You can watch new videos in a variety of different categories, and you can share your own content right from your device. Read more about Vimeo.