ProdJudge - a FOSS web app to judge products in JavaScript, CSS, HTML, PHP, and SQL
It uses Raphaël: https://dmitrybaranovskiy.github.io/raphael/
It can run on cheap web hosting services such as https://www.one.com/.
See demo on: https://youtu.be/9i6MfY8tA4Y
ProdJudge was programmed by me late 2009 to early 2010.