Perceptron is dedicated to the public domain, and is made thanks to the many Creative Commons & open source resources out there! Here is a full list of music, sounds, and code used:

Music: "Bleu" by Komiku (CC Zero). Download their full album on Free Music Archive

Sound Effects:

• click plink pop boop bonk by Owdeo (CC BY-NC)
• Swoosh by aglinder (CC Zero)

Open Source Libraries:

• PIXI.js for rendering graphics
• Howler.js for the audio
• Tween.js for tweening animation
• Balloon.css for pop-up tooltips
• Q for promises
• MinPubSub for publish/subscribe
• Pegasus for me being too lazy to write my own XHR

Font: Futura Handwritten by Bill Snyder

Creative Commons Zero: it's a public domain dedication, so basically, do whatever you want! Attribution is super appreciated, but we are not gonna send legal goons after you or anything. We even took a good part of this project out of another CC0 project.