Spotalike - Spotify playlist with similar songs, according to Last.fm
Apple Music Web App - Apple Music is now available to stream on the web
MusaicFM - An iTunes like screen saver based on Spotify and Last.fm
Apple Music - Apple Music app combines your personal iTunes library with Apple's music subscription service. Music you have purchased from the iTunes store, or synced over from other sources, is available in the "Library" tab. Read more about Apple Music.
Bowtie - Bowtie is a desktop accessory that allows you to see and control your music (iTunes, Spotify...
Musish - A web client for Apple Music