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.
4k Video Downloader - 4K Video Downloader is a software program that helps people download video files from sites such as Facebook, YouTube and Dailymotion.
Youtube Video and Audio Downloader - Download YouTube videos in all available formats and extract the original audio files.
SaveFrom.Biz - Convert YouTube video URL to MP4 file and download it to your device. SafeFrom is the best YouTube video downloader and converter.
youtube-dl-gui - A cross platform front-end GUI of the popular youtube-dl written in wxPython.
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!