Great Downloader easy to use can convert into multiple file formats. Fast and impressive
Video DownloadHelper - Browser extension to download videos from the Web
Yandex.Music - Открывайте новое каждый день!
youtube-dl-gui - A cross platform front-end GUI of the popular youtube-dl written in wxPython.
Spotify - Map shows when two people play same song at same time
Youtube Video and Audio Downloader - Download YouTube videos in all available formats and extract the original audio files.
Vadle - Download videos and musics with simplicity from multiple websites (Youtube and more).