processing/p5.js
p5.js is a client-side JS platform that empowers artists, designers, students, and anyone to learn to code and express themselves creatively on the web. It is based on the core principles of Processing. Looking for p5.js 2.0? http://beta.p5js.org
License & maintenance
LGPL-2.1 is a copyleft license: products that include or modify it may have to publish their code.
Last code push today.