McChatBridge

Once installed, the mod starts a built-in HTTP web server inside the Minecraft server process, on port 8080 by default. Players open that address in a browser and reach a page that shares the server's global chat, synchronized in both directions between the web page and the game. Private messages between players are also available, and their history is stored encrypted with AES-256-GCM.

Beyond chat, the web page shows the players currently online along with their avatars, updated in real time. Players can also upload images, which appear in the web chat as clickable links and are seen in game by anyone who installs the ChatImage mod. A small Clicker mini-game lets players dig ore out of blocks by clicking and transfer the resulting items into their server inventory.

All settings live in configuration files in the server's config folder, where the port can be changed and the mini-game or image uploads can be disabled for all users. The mod runs on the server alone, so players join without installing anything. It is built for NeoForge 1.21.1 only and is released under the MIT License as open source, with the source code publicly available.