Cover Fetcher - Cover Fetcher is a simple program that downloads album artwork from last.fm.
Spotify - Map shows when two people play same song at same time
Creevity MP3 Cover Downloader - Easily find and add covers to your mp3 files.
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
MusicBrainz Picard - Official website for MusicBrainz Picard, a cross-platform music tagger written in Python.Downloads · MusicBrainz Blog · Picard 2.
SoundCloud - Enjoy music & follow favourite artists