The (often associated with projects like EaglyMC ) represents a significant step for browser-based Minecraft, though many "1.20" versions are actually highly modified versions of 1.8.8 or 1.12.2 that port newer features into the older engine.
: Some clients, such as the EaglercraftX-1.20-File-html on GitHub, are distributed as single HTML files for easy "offline" use. Technical Development Challenges eaglercraft 120 client new
The core team behind Eaglercraft (Maintained by lax1dude and others) has a nightly build. You will need: The (often associated with projects like EaglyMC )