Great Downloader easy to use can convert into multiple file formats. Fast and impressive
Apple Music - Apple Music app combines your personal iTunes library with Apple's music subscription service. Music you have purchased from the iTunes store, or synced over from other sources, is available in the "Library" tab. Read more about Apple Music.
Video DownloadHelper - Browser extension to download videos from the Web
TIDAL - Tidal is a streaming music service supported by some of the most influential artists working in the industry.
youtube-dl-gui - A cross platform front-end GUI of the popular youtube-dl written in wxPython.
Last.fm - The world's largest online music service. Listen online, find out more about your favourite artists, and get music recommendations, only at Last.fm
Youtube Video and Audio Downloader - Download YouTube videos in all available formats and extract the original audio files.