Youtube Mp3 Today - Convert youtube videos to mp3 in 1 click every time
Coconvert - Download and Convert Videos and Playlists from Youtube & More
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!
Ant Video Downloader - Addon for Mozilla Firefox to download videos from video websites
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.