Highlight Reels by Milk Video - Turn videos into highlight reels
CONV. - Convert YouTube video to MP3, GIF or MP4
Seio.io - Re-purpose your video content for social media automatically
Softorino YouTube Converter - Download YouTube video & audio. Watch and listen offline
iCouch - Best way to share & discover video content!
You-Get - Command-line utility to download media contents from the web