Mp3Bear - Mp3Bear is an Mp3 music search engine that locates the mp3 files all over the net.
Youtube Mp3 Today - Convert youtube videos to mp3 in 1 click every time
MP3Juices - MP3Juices is a free mp3 search engine and tool that allows you to download unlimited mp3 files anywhere around the world.
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!
LoudTronix - LoudTronix is the most leading service that helps you to find and download your favorite Mp3 music without any limitation.
yt2mp3.org - Free online YouTube to MP3 Converter