MorseCodeTranslator.co - Morse code translator is a free website that allows you to quickly translate text to morse code, also can download audio, and see flash signal.
Magic Playlist - Get the playlist of your dreams based on a song
Morse Typing Trainer - This chrome experiment is part of a larger project to support Morse code for accessible communication.
Spotalike - Spotify playlist with similar songs, according to Last.fm
Morse - Create, shout out, and discover nearby events in real time
Playlist Machinery - Tools that help you create & organize your Spotify playlists