ClipConverter.cc - ClipConverter.
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.
OnlineVideoConverter.com - OnlineVideoConverter.
4k Video Downloader - 4K Video Downloader is a software program that helps people download video files from sites such as Facebook, YouTube and Dailymotion.
VidToMP3.com - VidToMP3.
SaveFrom.Biz - Convert YouTube video URL to MP4 file and download it to your device. SafeFrom is the best YouTube video downloader and converter.