Heartbeat - Listen to music with your friends together, on Spotify
The Algorithm Design Manual - Learn about designing and analyzing algorithms
Festify - Festify is a free Spotify-powered app that lets your guests choose which music should be played...
Algorithm Visualizer - Write down your algorithm to be visualized
BeatSense - Discover great music hand-picked by real people, in a single click. FREE and in real-time!
State.of.dev - Visualizing the current state of development