Axiom - Axiom is a general purpose Computer Algebra system.
Synthesia - A fun way to learn how to play the piano.
Zontroy Generator - Let the computers do what they can
Playground Sessions - Online piano learning game.
ZenRows - Are your web scrapers blocked once and again? ZenRows API handles premium proxies, anti-bot protection bypass, and CAPTCHAs, so you get the HTML from any website with a simple API call.
Piano From Above - Piano From Above is a program that turns learning the piano into a videogame.