Auto-Lan

Info:

This mod's codes are inspired by Custom-LAN

Functions:

Customize more of your integrated server (Online Mode, Max Players, MOTD)
Use ampersands (&) for formatting codes instead of section signs (§) and variables (e.g. ${username}, ${world}) in the MOTD
Change the settings mid-game (including the port) and stop the server without quitting the world
Save the settings globally or per-world (they are loaded automatically with per-world settings taking priority over the global ones, which take priority over the system defaults)
Change who can use cheats individually using the /op and /deop commands and cheat in singleplayer without opening to LAN (replaces the Allow Cheats button)
Manage bans with /ban, /ban-ip, /banlist, /pardon and /pardon-ip, and whitelist players with /whitelist (use /whitelist on/off to enable/disable)
Expose your server outside your LAN without port forwarding using tunnels (currently only ngrok is supported)

Commands:

/publish [port] [onlineMode] [maxPlayers] [defaultGameMode] [tunnel] [motd]
/publish [perworld|global|system] [port] [onlineMode] [maxPlayers] [defaultGameMode] [tunnel] [motd]
/publish stop

The global settings are stored in .minecraft/config/autolan.toml, while the per-world ones are stored in data/autolan.dat in the respective world's directory.

The files used are also per-world and the same as on dedicated servers—banned-players.json, banned-ips.json, whitelist.json—though whether the whitelist is enabled is stored in data/autolan.dat.