1 | Pandora
117 - eBizMBA Rank | 60,000,000 - Estimated Unique Monthly Visitors | 72 - Compete Rank | *60* - Quantcast Rank | 219 - Alexa
2 | Yahoo Music
200 - eBizMBA Rank | 55,000,000 - Estimated Unique Monthly Visitors | *100* - Compete Rank | *300* - Quantcast Rank
3 | Google Play
250 - eBizMBA Rank | 52,000,000 - Estimated Unique Monthly Visitors | *150* - Compete Rank | *350* - Quantcast Rank
4 | SoundCloud
253 - eBizMBA Rank | 50,000,000 - Estimated Unique Monthly Visitors | 328 - Compete Rank | NA - Quantcast Rank | 177 - Alexa
5 | MySpace
388 - eBizMBA Rank | 40,000,000 - Estimated Unique Monthly Visitors | 23 - Compete Rank | 153 - Quantcast Rank | 988 - Alexa
6 | Spotify
754 - eBizMBA Rank | 16,000,000 - Estimated Unique Monthly Visitors | 401 - Compete Rank | 892 - Quantcast Rank | 969 - Alexa
7 | Tunein
836 - eBizMBA Rank | 15,000,000 - Estimated Unique Monthly Visitors | 714 - Compete Rank | 698 - Quantcast Rank | 1,096 - Alexa
8 | Last.fm
1,155 - eBizMBA Rank | 13,000,000 - Estimated Unique Monthly Visitors | 1,034 - Compete Rank | 1,232 - Quantcast Rank | 1,198 - Alexa
9 | iHeart
1,288 - eBizMBA Rank | 6,500,000 - Estimated Unique Monthly Visitors | 492 - Compete Rank | *656* - Quantcast Rank | 2,716 - Alexa
10 | Grooveshark
1,455 - eBizMBA Rank | 6,000,000 - Estimated Unique Monthly Visitors | 1,510 - Compete Rank | 1,903 - Quantcast Rank | 952 - Alexa
11 | AllMusic
1,660 - eBizMBA Rank | 5,000,000 - Estimated Unique Monthly Visitors | 1,590 - Compete Rank | 943 - Quantcast Rank | 2,448 - Alexa
12 | Jango
3,590 - eBizMBA Rank | 2,500,000 - Estimated Unique Monthly Visitors | >2,277 - Compete Rank |*3,000* - Quantcast Rank | 5,493 - Alexa
13 | Radio
4,800 - eBizMBA Rank | 1,500,000 - Estimated Unique Monthly Visitors | 2,211 - Compete Rank | *2,812* - Quantcast Rank | 9,377 - Alexa
14 | Rdio
4,902 - eBizMBA Rank | 1,250,000 - Estimated Unique Monthly Visitors | 4,566 - Compete Rank | 4,812 - Quantcast Rank | 5,327 - Alexa
15 | Songza
6,066 - eBizMBA Rank | 1,200,000 - Estimated Unique Monthly Visitors | 5,245 - Compete Rank | *3,475* - Quantcast Rank | 9,477 - Alexa
Some others of any worthwhile ranking:
iLike - a community that lets you discover new music based on you and your friends' tastes.
PureVolume - a "MySpace for music", albeit with a classier design.
ProjectPlaylist - popular site for sharing playlists and posting them to other social networks.
Imeem - another playlist-sharing community for artists and fans that also supports embedding of tracks on other social sites and blogs.
MP3.com - the famous music site is now a social network similar to MySpace Music.
iJigg - a place for indie bands and artists to post their music, which the users can download for free.
MOG - a place to share your music and video library and exchange thoughts on music with others.
Fuzz - discover new music; artists can sell their music, but there are also free songs to be found on the site.
eListeningPost - convert your tracks into preview files, then sell them and keep 94% of the profits.
Bandbuzz - find and rate music playlists in a Digg-like interface.
Midomi - find songs by humming or singing the tune. Then explore profile pages and network with others.
Buzznet - large pop culture community with news, videos, photos and member profiles.
JukeboxAlive - Upload music and share tracks with friends. Bands can sell their CDs, write a blog and post events to a calendar.
ReverbNation - social network connecting bands, fans and venues.
Grooveshark - an online service that rewards you for sharing, reviewing, and discovering new music (currently in private testing - enter you email address on the homepage to be notified of the launch).
Dopetracks - upload and share your tracks and beats, and record music online.
Funk Player - a music sharing community where authors can upload songs, while everyone can bookmark, select, listen and comment on them.
Soundflavor - create playlists and share them with other users; meet people with similar taste and discover new music.
FineTune - pick an artist and receive a custom playlist featuring music by that artists and other related artists.
MusicMobs - browse through playlists and create your own in a simple interface.
uPlayMe - a downloadable application that lets you meet people with similar music tastes.
Audiozue - A Mac OSX application that posts your recently-played iTunes tracks to your MySpace page or blog.
Sonific - a music network where you can store the music you hold the rights to, and syndicate it to other sites with SongSpot widgets.
Mediamaster - upload your entire music collection and access it from anywhere in the world. You can also publish this music via widgets to any website.
BooMP3 - upload and share your MP3s; unlimited hosting.
Goombah - an application that scans your iTunes library and connects you with like minded users.
Maestro - upload your entire music library and access it from anywhere.
iTunes - Apple's overwhelmingly popular music download store is a service that requires little in the way of introduction.
Amie Street - music market where music starts with free price, and the price increases as a track becomes more popular (the price never goes above 1 dollar).
Emusic - one of the most successful "indie" music stores, with over 100 million DRM-free tracks sold.
Bleep - high-quality MP3s with prices that are a bit high, but offering a great assortment of quality music.
MP3 Tunes - an online music store offering 30,000 albums and some 360,000 songs in its catalog.
Amazon - a soon-to-come music store which should have a huge assortment of music from big and indie labels alike.
PayPlay.FM - choose between over 1.4 million indie music tracks, and buy them in either MP3 or WMA format.
Beatport - a Flash-based music store with an embeddable player.
Audio Lunchbox - choose between 2 million DRM-free songs in MP3 or OGG format.
Indiepad - buy music from indie artists; if you're an artist, sell music to people directly on the site.
Mtraks - an indie music marketplace with a very interesting and quite strong music collection in store.
MagnaTune - here you'll find an assortment of music from various genres, ranging from electronica, rock and chillout to metal & punk.
Jamendo - an online music repository offering thousands of albums for free while still protecting the artists' intellectual rights.
Musicane - buy and sell audio, video and ringtones.
Musiclovr - music search, recommendations and a store. Purchases are made via Amazon and iTunes.
Jamglue - remix your music online and listen to other users' mixes.
Splice - upload samples, remix them and post them for others to hear.
YourSpins - mix your own version of your favorite track, share it and post it to your blog or MySpace page.
Music Social Networks
Billboard - home of the Billboard charts, with music videos and reviews.
Flotones is a monetized social network for artists and their fans.
Radio 2.0 from Mercora is a social network with an integrated free music listening service
MOG is a social network that helps you “discover people through music and discover music through people”.
iLike, another familiar one, is a service to help you organize your music, share your music tastes, and discover new artists through your friends.
JamNow is a social network aimed at musicians that allows them to create audio content online in real-time.
Sonific is a social network that offers a great way to promote your music, if you are an artist. It lets users put free music widgets with your music on their sites and promote it to their own audiences
Midomi is a network that makes it easy to discover new music and people. The cool thing is that you can search for music by singing or humming part of a song.
iJigg is a online community that lets you comment on music and share songs. You can rate music and influence what becomes popular, as well as upload your own music to share