Img.vision - Image hosting & video hosting for eCommerce sellers
Magic Playlist - Get the playlist of your dreams based on a song
UploadHouse - Thumbnail and resize your photos and images
Spotalike - Spotify playlist with similar songs, according to Last.fm
ImageVenue - ImageVenue is a great online hosting service that allows uploading pictures for showing creative works with a simple-to-use technique.
Playlist Machinery - Tools that help you create & organize your Spotify playlists