Getfvid - Getfvid is an online tool that allows you to convert any Facebook video to mp3 or mp4 and download them without paying any fees.
CONV. - Convert YouTube video to MP3, GIF or MP4
VideoDownloader.io - Download any online video from your favorite websites
Softorino YouTube Converter - Download YouTube video & audio. Watch and listen offline
FastVid - FastVid offers a Video Downloader for Facebook that allows you to select any video from FB, copy its URL, paste it into the field, and click on download to save it to your device.
Yout - YouTube to Mp3 Converter