Bit : Habit Tracker - Bit : Habit Tracker is a digital habit tracking app that comes up with features to help you in keeping track of a large number of habits on the basis of their categories.
Magic Playlist - Get the playlist of your dreams based on a song
Nomie - Open-source mood and life tracking
Spotalike - Spotify playlist with similar songs, according to Last.fm
Habit Rabbit - Habit Rabbit app allows users to create life goals so they can track their goals and get things done by using small habits.
Playlist Machinery - Tools that help you create & organize your Spotify playlists