Eaglercraft 1.5.2 is a web-browser version of Minecraft that allows players to join multiplayer servers via WebSocket (wss://) URLs
Use the legacy EaglerXBungee plugin. It acts as a bridge between a standard Minecraft Spigot/Paper server and the Eaglercraft web client. eaglecraft+152+servers+2021
In 2021, the developer focused on the 1.5.2 "Redstone Update" version, which was chosen for its relative simplicity and nostalgia. Popular Eaglercraft 1.5.2 Servers in 2021 Eaglercraft 1