Greasy Fork is available in English.
YouTube Multi Downloader (Lite) v1.0 - Offmp3.app (MP3, MP4, M4A & WebM)
Alternative to: YouTube Multi Downloader. This script helps to add a download button. Presents the fastest ways to transfer and ensure quality. Supported Services: YouTube, SoundCloud, Mixcloud, Facebook, Bandcamp, Twitter, Dailymotion, Vimeo, Instagram and ReverbNation.