Smart Vector Table
Noodlemire

API that adds a way to create tables indexed by 3D Vectors.

TPH's Doors API Redo
TPH

(INTENDED FOR DEVELOPERS) Attempts to ease and better simplify door mechanics + registration

DeltaTime
SkyBuilder1717

Adds deltatime API

DataMiner
sorcerykid

DataMiner is an analytical tool for server operators with a feature-rich API for customized report generation

Metatable Metamethods Fixes + Customization
TPH

Attempts to fix issues with metamethods for Lua 5.1 as well as adding new ones + custom functions

Phonics Library
Neuromancer

Provides a library for creating Phonics (Learn how to read) mods in different languages.

Player Settings
1F616EMO

Player-specific settings

Old Wizard Font
Pyrollo

OldWizard font for Font API

Shop Dialog
1F616EMO

Formspec-based shop dialog

Archaeology
SkyBuilder1717

Adds an looting and API in archaeologing

Trucraft
mt-mods

An alternative crafting system done entirely in the world.

Quest Framework
TeTpaAka

Simple framework to define quests.

SmartFS
rubenwardy

A library to allow mods to make Formspecs, a form of GUI, easily.

YL Ticker
AliasAlreadyTaken

Displays messages once per timeframe

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.

Discord Bridge
Lesha_Vel

Mod + external program providing Discord relaying and commands. This is a fork of discordmt by archfan7411

action queues
fluxionary

provides an API for queuing things for batch processing w/ various ways to specify the batch "size".

Timed World Modifiers library
karamel

Environmental ABM that could be triggered on a very wide range of nodes but only a few at a time.

HTML to Luanti Hypertext
1F616EMO

Convert HTML to Luanti Hypertext for formspecs

Discrete Player API
Hypernoot

A library for games which attaches players to node grid

Anti Exploit
LMD

Protects against exploits

PostgreSQL Library
Tomlaus

Library for PostgreSQL Db.

NameGen
cronvel

Name generator API.

Archipelago Library
Warr1024

Archipelago multi-world randomizer integration library

Debugging Console
sorcerykid

Provides an in-game HUD to easily monitor debug output

FS51
Luke

Compatibility layer for formspecs

Complete and Total Lua-Only Inventory Rewrite
Noodlemire

Creates a completely custom inventory system, which doesn't rely at all on any of the usual UserData objects.

deploader
LuantistDork

Simple mod API that automates dependency-specific behaviour using a folder-heavy approach.

Scripted World Editor
Neuromancer

API that allows you pass in scripting tables to fill a series of shapes of different sizes with different nodes

Job Control Mod
sorcerykid

A more flexible alternative to the builtin minetest.after function

Timekeeper
sorcerykid

Timekeeper acts as a centralized dispatcher for all time-sensitive routines

More vector helpers
Hybrid Dog

Adds more vector functions.

Echo
1F616EMO

In-game notification system

Star
Wiz

A* Pathfinding algorithm implementation

Mapsync
BuckarooBanzai

Synchronize the ingame map with a lua-backend

more_player_monoids
fluxionary

more player monoids

Luarocks Wrapper
lazerbeak12345

Securely Wrap Luarocks packages without needing trusted mods.

Face Objects
1F616EMO

Calculate the facing of objects

Tips
1F616EMO

Send tips to newcomers

Bedrock Markup Language
sorcerykid

Bedrock Markup Language is an extensible markup language and API for formspecs.