LocalChat
qPexLegendary

Adds local and global chat

Chat Notification
Misnad

Plays a notification sound to all player when a player sents a chat message.

Vote Night
Holly Mae

Allows players to vote for it to be night

modinfo
fluxionary

get info about the mods running on a server

Lush
rstcxk

fully featured shell interpreter

Display
SkyBuilder1717

Adds command to display URL images.

Chat Anticurse
lag01

Kick player out when they type a curse word in chat or using /me or /msg command.

Chat Visual
Itz-Noah

Need a way to distinguish between staff and players?

Mines
ApolloX

Regenerating terrain

filter++ lib
rstcxk

provides an API for filtering text

Chat History
sorcerykid

Interactive chat history viewer with a variety of message filtering options

No Touch, Griefer!
ROllerozxa

Per-IP interact privilege bans

Detailed Features
Holly Mae

Lets you see detailed info on specific mods

Beerchat
mt-mods

standalone chat channel mod

Server Essentials
jolethen

An essential mod for any server

Ascend
kestral

Ascend by chat command, if possible.

Random Messages
1F616EMO

Register random announcements

bug command
fluxionary

adds a command that submits a bug report to a github repo.

Smart Chat
Clyde

A new, lightweight, simple and modular Chatsystem

Manners
brylie

Polite farts and burps.

verbana
fluxionary

verification and banning

Chat Guide
Ludus

A virtual assistant that helps players with tips, guides, and useful information.

Chat2
lag01

Complements game built-in chat or replaces it.

DoAs
IlzumiZeminori

Execute commands on behalf of another player

elysium
Giga_M

add a elysium command

ping
Giga_M

show your ping

Archipelago for Citadel
Warr1024

Connect Citadel to Archipelago Multi-world Randomizer

Public Death Messages
Thresher

Adds toggleable and unique death messages for when a player dies

Chat3
octacian

Makes chat on a populated server much easier to understand and keep up with.

Nations
Rafael173

Nations mod

Shortcut
Derevio

Adds the ability to set shortcuts to commands.

Telegram
neko259

Integration with telegram messenger chat

CStrict
Logikí

This gives protection in chat from bad persons, from cursing & swearing

Matrix Chat
joenas

This mod creates a bridge between a Matrix channel and the in-game chat!

Autograph Mod
Jo5629_

Autograph Mod

Lu's Broadcast
LuizFcc

Easily broadcast any message to your server!

Minebase Core
ThatCommand

Adds APIs and new dynamic functionalities.

DTools
Logikí

this gives tools for developers

Discontroll (disconnect troll)
Sofik5800

Troll players with command (chat message .dct). Select troll name and troll type in discontroll menu.

MT-Channels
Elysian

This is a mod that adds channels.