Itemstring Viewer
Holly Mae

Displays full itemstring of a held item

Fake unknown node
orwell

Adds a node that looks like an unknown node

Holoemitter
BuckarooBanzai

Holo emitter mod

Dice
Wuzzy

Decorative dice blocks which face a random direction.

Manny
ElCeejo

Adds Manny from that one Reddit post.

Tell
octacian

Message offline players

UndoMistakes
mi.sh

You can undo Mistakes, such as stripping Wood

BetterPM
SonoMichele

Improves private messages and makes them more customizable

Condensed Cobblestone
1F616EMO

81 cobbles in one item!

Cycle Limit
LMD

Limits hotbar slot switching

J_Mute
j45

Mute players that are spamming.

Playtime Recorder
Lejo

Use /playtime to get the time you played

Saturation Adjustment
ROllerozxa

Adds a chat command that allows you to adjust the saturation of the graphics.

Text Text.
olive

Replace textures of nodes with their names.

Custom Chat Prefixes
Impulse

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

ServerSay
Truemmerer

Write in the Chat as the server

Awards STL
vejou

Adds awards to Stellua, and an API to register new ones. Based on Rubenwardy's Awards.

Loot Crates
ElCeejo

Adds randomly spawning loot crates.

Minetest Discord Webhook
activivan

Mirror your in-game chat to Discord using webhooks

Cross-Section
Silver Sandstone

Cuts the world in half.

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.

Cloud Items
Panquesito7

Powerful cloud tools.

Warning: Non-free media.

Disco trains
sivarajansam

Adds colorful subway trains to advanced trains

Biome Lib
mt-mods

The biome spawning and management library.

Scientifically Accurate TNT
AwesomeDragon97

Fixes some of the shortcomings of the original TNT mod.

FakeLib
OgelGames

Fake userdata library

Formspec AST
Luke

A library to help other mods interpret formspecs.

VoxeLibre Shader Preset Port
QBSteve

Enable VoxeLibre's shaders preset for other games.

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.

Magic Materials
mt-mods

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

Mobs Ethereal Bosses
PixelZone

Adds 3 bosses to some biomes..

Travelnet
mt-mods

Network of teleporter-boxes that allows easy travelling to other boxes on the same network.

More TNT
mittelmaessigercoder2

Adds more TNT

Mobs Skeletons
TenPlus1

Adds three skeletons to the world.

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

VoxeLibre Custom World Skins
covertiii

Add Custom Skins in VoxeLibre

LEEF filesystem
fatalerror420

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