Mashweb's JavaScript and BiwaScheme playground. Mainly demos of Zen, a toolkit to enable sequential programming of web apps. There's nothing here yet but this README.
See also https://mashweb.club/, https://github.com/Mashweb, https://github.com/Mashweb/seq_webapp_biwascheme, and https://github.com/tomelam.
Older websites, still useful: https://tomelam.blogspot.com/, https://www.tomelam.com/.