No Lag
AFCM

[April fool's joke] Removes Lag

Throw Bricks to Glass
Ludus

Throw a brick... what did you expect?

Tell
octacian

Message offline players

Itemstring Viewer
Holly Mae

Displays full itemstring of a held item

Player_join
Elysian

Adds a custom join and a left message.

M.Y.K.O.T.A
Xevin

Adds M.Y.K.O.T.A self-propagating mushroom liveform

Last Login Signs
fgaz

Adds signs that show the last login of players that right-clicked them

UndoMistakes
mi.sh

You can undo Mistakes, such as stripping Wood

Floppies
ROllerozxa

Throwable floppies... That's what they're used for right?

Tools Using the Node Damage and Repair System
Noodlemire

Overrides pre-existing tools to make them cause persistent node damage.

J_Mute
j45

Mute players that are spamming.

Holoemitter
BuckarooBanzai

Holo emitter mod

Fake unknown node
orwell

Adds a node that looks like an unknown node

Playtime Recorder
Lejo

Use /playtime to get the time you played

Cross-Section
Silver Sandstone

Cuts the world in half.

Custom Chat Prefixes
Impulse

Adds Custom Chat Prefixes, you can choose a prefix and colour.

Drift Game
mt-mods

Drive a car around procedurally generated roads

Text Text.
olive

Replace textures of nodes with their names.

Cycle Limit
LMD

Limits hotbar slot switching

Loot Crates
ElCeejo

Adds randomly spawning loot crates.

Simple Dialogs
Kilarin

Simple Dialogs allows you to add dialogs for npcs and other entities, controlled by an in game text file.

Tardis
iarbat

Adds a functioning space-time machine from the tv show doctor who.

Spawners
SaKeL

Adds spawners for mobs, dungeons, temples and ores.

Disco trains
sivarajansam

Adds colorful subway trains to advanced trains

Controls
mt-mods

Utility library for control press/hold/release events

VoxeLibre Shader Preset Port
QBSteve

Enable VoxeLibre's shaders preset for other games.

Scientifically Accurate TNT
AwesomeDragon97

Fixes some of the shortcomings of the original TNT mod.

Formspec AST
Luke

A library to help other mods interpret formspecs.

FakeLib
OgelGames

Fake userdata library

Too Much TNT!
SkyBuilder1717

Adds a lot of TNT for Minetest Game to make gameplay more fun!

Unicode Text
erle

This library can be used to render UTF-8 encoded Unicode text to a texture (e.g. with tga_encoder). It is intended to be used from code that needs to render in-game signs.

Rifles
shaft

Adds guns, rocket launchers and grenades.

yams RPG
jara25

An MTG fork with light RPG elements.

Magic Materials
mt-mods

A mod providing common resources and shared magic system for modpacks like gadgets_modpack, bweapons_modpack, and possibly others

LEEF b3d
fatalerror420

A b3d reader, cloned from modlib. Requires LEEF-filesystem, requires LEEF-Math for nodes module.

LEEF class lib
fatalerror420

Simple class system, with a inbuilt read-only table system

LEEF filesystem
fatalerror420

adds dependencies for binary file reading, as well as other file utilities. Orignally from Modlib

LEEF math (CPML)
fatalerror420

Integrates CPML library from the Love framework community into Luanti

VoxeLibre Custom World Skins
covertiii

Add Custom Skins in VoxeLibre

aimtrainer
astro

A game to practise your aim