The Grue mod
Majozoe

It is pitch black. You are likely to be eaten by a Grue.

NodeCore Heaters
nneett

Just a little mod I wrote to add a flameless heater.

Components Library
Mindcool25

Library for generating components based on base materials

Inspect Tool
SFENCE

Inspect tool to show some info about nodes which support inspection.

Fai chun
1F616EMO

The traditional decoration in China

Flamethrower
Jeija

Adds a flamethrower using particles. It makes things burn and scorches grass; does not cause damage to any object.

BlockWatch
Neocraft1293

The BlockWatch mod allows you to get logs for all blocks in the game.

Instant Respawn
epCode

Skips the death screen.

Inventory Inspector
Flay Krunegan

Allows you to view the inventory of the players

Bread
Lahusen

Just my favourite bread recipes

Troll
niwla23

This adds a lot of commands to troll! Its ver WIP

Missions
BuckarooBanzai

Adds blocks to create missions with rewards, timeout and penalties.

Parties
Zughy

Team up with your friends and create a party!

Zinc
alerikaisattera

Zinc metal, used for making brass

Watershed
paramat

A river / mountain range mapgen

Kudzu
chaosomnium

kudzu (invasive spreading plant) mod, with useful crafts and items

Dice API
Extex

API for creating physical dice

Points of Interest
Clyde

Mod to create or visit Points of Interest

limit_physics_monoids
fluxionary

overrides monoids controlling player physics provided by player_monoids, to limit how big they can grow.

Mapserver
BuckarooBanzai

mod for the mapserver

challenge
josegamestest

challenges to create route challenges or to train flight

use_texture_alpha workaround
1F616EMO

Fix boolean use_texture_alpha on MT5.9+

Epic
BuckarooBanzai

Enhanced Programmer for Ingame Control

Internet Relay Chat
kaeza

Connect your server to an IRC channel, and install irc_commands to control the server from IRC

Catcommands
mt-mods

adds some useful commands for servers

PVP Toggle
Impulse

Enables you to choose whether you want to PVP or not.

Grass Instabreak
MrBertram

Makes certain flora blocks instantly breakable by hand.

Polygraph
sorcerykid

A formspec-based charting API providing a rich set of output parameters

Craftable Lava Blocks
Darin755

Makes Lava blocks craftable

Jukeloopbox
ulla

A simple jukebox that can be used for small looped tracks, or simply to listen to music

Lua2Mts
Neuromancer

Allows converting .lua schematics files to .mts files.

LibreAdventure3
Hanuko33

Minecraft golden age clone with improvements

Minetest-Telegram Bridge
1F616EMO

Chat bridge between Luanti and Telegram

Bitwise Operations
sorcerykid

A pure-Lua implementation of common bit-manipulation functions

Areas Interlocking Patch
wsor4035

make advtrains interlocking priv respect areas

Crucifix
LuantistDork

Adds a crucifix to insta-kill anything

Auto-Trek
Warr1024

Automatic long-distance walking via assisted auto-forward

Xiangqi
y5nw

Xiangqi (Chinese chess)

Invisible Wall
X17

Adds a simple invisible block

Blockwatcher
Cashia

Logs block edits and allows rollbacks for admins