Roadway
X17

Adds simple roads in 4 sizes.

Kick Player on Death/Respawn
Volik

Kicks player on death or respawn.

Chat Games
Impulse

Get rewards for answering questions in the chat.

player attributes
fluxionary

API for defining abstract, compositional player attributes

Moth
iarbat

Adds moths which can send messages (from Lord of the Rings)

Caps Alert
ANAND

Catches chat messages with all-caps and warns / kicks players.

LocalChat
qPexLegendary

Adds local and global chat

Item Holders
Jose_ManuelS18

Adds 'Item Holders', blocks that hold your items in display, also provides a API.

Colored Chat Text
Bob64

This makes the minetest chat messages a different color depending on what you set it to in the settings.

Rotting Wood
Polynium

Causes wood to slowly rot while exposed to water

Vlf Falling Suprise
VoxelForge

A survival challenge for VoxelForge With a nasty suprise... Beware: This may grief (Or even destroy) your world

Telegram
neko259

Integration with telegram messenger chat

Hades Revisited back-compatibility
SFENCE

Make old Hades Revisited world compatible with new versions of Hades Revisited (from version 0.7.0 to 0.13.0).

Copy From Chest
zeronumbers

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

Engravings
Taren

Adds multiple engraved blocks and benches to make them.

Simple notification wrapper
KirowL

This project offers a Notification System API to display temporary messages on the player's screen, allowing seamless integration of notifications into gameplay.

Minetest Engine Stats
mtvisitor

Get some basic stats of MT Engine. (must >= ver5.8)

balanced diet
fluxionary

api for specifying multiple dimensions to eating

Discrete Player API
Hume2

A library for games which attaches players to node grid

Unknown Item
1F616EMO

Add a fake unknown item

Upgrades
niwla23

Adds effects to players for a short time

Chat Games API
Impulse

An API to build chatgames like those in the chatgames

Plastic Box
Starbeamrainbowlabs

Adds a recolourable plastic box. Fork of @cheapie's version with improvements.

Keep Inv Random
Tomlaus

There is a 10% chance that your inventory will be deleted when you die, even if keep inv is on.

Colorscreens
DELTA_FORCE

Decorations that can also be used as an actual greenscreen or other colorscreen.

Latency Protection
Coder12

Latency protection attempts to prevent players from glitching through protected nodes. By either teleporting the player or damaging them.

Callbacks API
ANAND

callbacks_api is a framework for registering callbacks if the callback registration function exists, else returns gracefully.

blueberry_juice
MR_breaddz

blueberry juice

Staff Channel
_Xenon

Write messages only to staff

World Action Script
AiTechEye

Programming+ electronics

Openion Yeast
Wovado

Adds Yeast and a Yeast Barrel

Table Goodies
benrob0329

A small package for extra (can't live without) functions for working with tables.

One For All
mt-mods

bans all players if one dies

Player Mute
DiamondPlane

Allows to mute players

Chat2
lag01

Complements game built-in chat or replaces it.

Metatool
SX

Provides API to register node metadata tools along with few useful tools

Autograph Mod
Jo5629_

Autograph Mod

Drawstruct
Xenon

Draw or generate random structures

evolving_pickaxe
Neocraft1293

a mod that adds a pickaxe that improves when used

Player IP Log
simondanerd

Mod for any game which logs what users join, and records their IP address. Content saved as a txt file in the worlds directory.