Openwhyd - Collect and Share the tracks you love.
4k Video Downloader - 4K Video Downloader is a software program that helps people download video files from sites such as Facebook, YouTube and Dailymotion.
Music Smasher - Find any song. Music Smasher searches Spotify, Rdio, SoundCloud, Bandcamp, and YouTube.
Video DownloadHelper - Browser extension to download videos from the Web
FoxTube - Play YouTube video continuously with playlists. FoxTube features:
youtube-dl-gui - A cross platform front-end GUI of the popular youtube-dl written in wxPython.