CodeSignal - CodeSignal is the leading assessment platform for technical hiring.
Synthesia - A fun way to learn how to play the piano.
coderpad - Collaborative code editor with in-browser, real-time execution. Conduct programming phone screens like a boss.
Playground Sessions - Online piano learning game.
CodeInterview.io - CodeInterview is a live coding interview tool for developers.
Piano From Above - Piano From Above is a program that turns learning the piano into a videogame.