filter++ lib
rstcxk

provides an API for filtering text

Blacklist Name
ANAND

Blacklist offensive names, forcing players to join with different names.

Messages Filter
Atlante

This mod allows you to filter the messages sent in order to maintain calm in your server.

DoAs
Zemtzov7

Execute commands on behalf of another player

Chat Filter
xXNicoXx

Minetest Chat Filter a simple but usefull minetest chatfilter mod made by xXNicoXx

Advanced Playtime
zanderdev

Keeps track of playtime for all players in your world. Notifies you how much playtime you have occasionally.

filter++
rstcxk

censors swears in the player chat using the filter++ liberary

Proximity Chat
GreenXenith

Only hear chat from nearby players.

Copy From Chest
zeronumbers

Adds server command copy-from-chest that copies items from chest at x y z to player.

player actions
GigaByte

shows the actions of a player

CStrict
Logikí

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

DTools
Logikí

this gives tools for developers

Telegram
neko259

Integration with telegram messenger chat

Chat Anticurse
lag01

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

Guilds
RisingLeaf

Adds a very basic guild system.

Clean Chat
MineTestDad

Parents wish to protect their children from possibly harmful words in chat. This allows them to maintain a list per player, which the parents in lieu of their children can extend by themselves.

Player Status
Thresher

Allows you to set and get the in-game status of players

Voxelforge /sit and lay commands
VoxelForge

Sit and lay using chat commands

Seed of the World
Flay Krunegan

Show the seed of the world

Time and Date Stamps
Bob64

This mod overrides the default chat format so that it also contains the date and time that the message was sent.

Block / Unblock users
jesuistitus

The "Block / Unblock users" allows players to block and unblock messages from other players in the chat.

PlayerInfo
niwla23

Players can set their info and others can see it

OpenInv
Bapt-tech

A mod for admin to open inventories and ender chests in case of duplication (needs openinv and openec priv)