MineKhan is a clone of Minecraft by Willard21. He started the project in 2017 by making a spin-off of Scuscraft on Khan Academy using Processing.js. It was moved to a webpage in 2020. In 2021, he moved it to his own site (willard.fun) and added a multiplayer feature.
Once you login to multiplayer, you can host your world for others with small system requirements. As of this writing there is only Creative mode available, but Survival modes are being created by other people.