Visualify - Visualize your top artists on Spotify
Designers MX - Curated playlists by designers, for designers.
SYQEL - Bring your music to life
Muru Music - Personalised playlists within seconds.
Kaleidosync - Kaleidosync is an all-in-one Spotify music visualizer that is all set to deliver a top-notch music experience with real-time support.
WiFi Map - A crowdsourced list of routers and passwords