OKRs.app - Reach your personal goals with OKRs
Magic Playlist - Get the playlist of your dreams based on a song
Simple OKR - Track, measure and manage OKRs
Spotalike - Spotify playlist with similar songs, according to Last.fm
Focus - New Tab page that gives you a moment of calm and inspires you to be more productive.
Playlist Machinery - Tools that help you create & organize your Spotify playlists