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
Musish - A web client for Apple Music
Bowtie - Bowtie is a desktop accessory that allows you to see and control your music (iTunes, Spotify...
feverTunes - A web player for Apple Music support adding tags to playlist