Great Downloader easy to use can convert into multiple file formats. Fast and impressive
Spotify - Map shows when two people play same song at same time
Video DownloadHelper - Browser extension to download videos from the Web
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-dl-gui - A cross platform front-end GUI of the popular youtube-dl written in wxPython.
SoundCloud - Enjoy music & follow favourite artists
Youtube Video and Audio Downloader - Download YouTube videos in all available formats and extract the original audio files.