Magic Playlist - Get the playlist of your dreams based on a song
Noise - Noise is a minimalist and streamlined music player that serves as one of the core proprietary apps for the Elementary operating system.
Spotalike - Spotify playlist with similar songs, according to Last.fm
yFi - macOS utility app to monitor your WiFi connection.
Playlist Machinery - Tools that help you create & organize your Spotify playlists
Waflee - Provides an effortless way to connect to your Wi-Fi