Amazon MP3 (document en anglais)

Amazon MP3 is an online music store owned and operated by Amazon.com. Launched in public beta on September 25, 2007,in January 2008 it became the first music store to sell music without digital rights management (DRM) from the four major music labels (EMI, Universal, Warner Music and Sony BMG), as well as many independent. Amazon offer "over 2 million songs from more than 180,000 artists, 14.8 million songs”

eMusic is a digital music service for independent-minded music lovers. eMusic Members sign up for a monthly subscription that allows them to discover, and download a fixed amount of tracks to their MP3 players per month. eMusic has more than 12 million songs in march 2011.

iMesh is a media and file sharing client. iMesh operates the first "RIAA-approved" P2P service, allowing users residing in United States and Canada to download music content of choice for a monthly fee in the form of either a Premium subscription or a "ToGo" subscription. A third option is also available for users (residing in either country) to permanently purchase tracks for 0.99 USD each, without a subscription. The client are limited to a select database of 15 million songs and videos.

iTunes is a media player and media library application developed by Apple Inc. It is used to play, download, and organize digital audio and video on personal computers. The iTunes Store is the world’s most popular music store with a catalog of over 26 million songs.

Last.fm is a music website. Using a music recommender system called "Audioscrobbler", Last.fm builds a detailed profile of each user's musical taste by recording details of the tracks the user listens to, either from Internet radio stations, or the user's computer or many portable music devices. Last.fm's music library contains well over 12 million individual audio tracks from artists on all the major commercial and independent labels

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