rt99 reference
I recently came across a new platform while browsing, and I was surprised by how smooth and fast the overall experience feels compared to others I've tried before, especially in terms of loading speed and usability
https://blog.mithril.re/nnoko8e3poo/nnoko-reference
http://write.tildeverse.org/d567bdto82qv6/567bdt-reference
https://5.1.e.7.0.a.a.e.0.a.2.ip6.arpa/tk10m35obv/tk10-reference