MusicBrainz - A community-maintained open source database and encyclopedia of music information.
MusicHarbor - MusicHarbor is an app that helps you stay on top of new music releases, music videos, events, and news from all your favorite artists and record labels.
Discogs - Discover music on Discogs, the largest online music database. Buy and sell music with collectors in the Marketplace.
Listnd - Listnd is a social platform for tracking, rating, and reviewing the music you listen to, and for sharing your thoughts with your friends and the world at large.
AllMusic - AllMusic.
Acclaimed Music - Acclaimed music is a top music recommendation tool that showcases the most popular song based on which is currently topping the Billboard charts and provides links to the latest music news.