ClipConverter.cc - ClipConverter.
MediaHuman YouTube to MP3 Converter - Extracts MP3 audio from YouTube, Vimeo, Dailymotion, Mixcloud, Bandcamp, SoundCloud and many others. Available for macOS, Windows and Ubuntu/Linux. FREE!
OnlineVideoConverter.com - OnlineVideoConverter.
4k YouTube to MP3 - Convert YouTube to MP3 on macOS, PC and Linux absolutely for free! Download the entire YouTube playlist and create your audio collection.
VidToMP3.com - VidToMP3.
FastFrom.com - Video & Movies