Patreon - Patreon enables fans to give ongoing support to their favorite creators.
Recast - Listen to radio stations' playlists with Rdio or Spotify
Cloud Patron - Open source Patreon alternative
RadioCut - All the radio to rewind, listen and share
BackMyArt - BackMyArt is a paid membership community platform that helps Artists gain financel peace of mind to focus on their Art. BackMyArt is made Exclusively for Artists!"
Radiojar - Social web radio made easy