CONV. - Convert YouTube video to MP3, GIF or MP4
Downie - Video download for OS X. Downie supports at this moment over 1,000 different sites.
Save IGTV - IGTV Downloader - Save IGTV Videos on any device with the fastest IGtv video downloader.
Yout - YouTube to Mp3 Converter
Viddit.Red - Download Reddit Video - helps download video from reddit, with audio. works with many different reddit posts and embeds.
4k Video Downloader - 4K Video Downloader is a software program that helps people download video files from sites such as Facebook, YouTube and Dailymotion.