Object UUIDs
Silver Sandstone

Assigns a persistent UUID to every object.

Ediblestuff API
lazerbeak12345

A unified API for making items, tools and armor edible. Eat armor while wearing it!

Item Holders
Jose_ManuelS18

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

Unified Stamina API
TestificateMods

Provides a universal API for handling different mods that provide a stamina bar

Quest Framework
TeTpaAka

Simple framework to define quests.

Node entity library
The4spaceconstants

Library for functional node entities.

group:any
1F616EMO

Item group applied to ALL items for crafting recipes.

VizLib
OgelGames

Visulization Library

AoM Settings
Sumi

Provides methods for both player level and server level settings

Persistent Effects
epCode

An API for creating persistent effects for any object. eg. damage a player or entity over time. (like poison)

Noriel Sylvire's Minerals Core Modpack
Noriel_Sylvire

An API for automatically registering recipes, nodes and ore generation.

Keyevent
DS

Adds an event for when player presses a key.

Interactive Item API
Jose_ManuelS18

Provides an API to make it easier to implement items' inner workings.

YAML Config File Library
snowyu

Load or Save YAML config file

flinv
Luke

API to add new inventory tabs which work across different inventory mods

Nametags2
Logikí

Allow objects had nametags with observers, colors and range

Mapsync
BuckarooBanzai

Synchronize the ingame map with a lua-backend

Extended Protection
1F616EMO

Extended interaction restriction rule

CentralAuth
1F616EMO

Player account unification across Luanti servers

DataMiner
sorcerykid

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

IntelligenceFramework
PlamiumAI

Provide an AI RNN API for developers.

afk_api
fluxionary

an API for registering events which trigger when a player goes AFK or comes back from AFK.

The Mob API
TX_Miner

Provides a simple API for mobs

Advanced Forceload
Kimapr

a better forceloading API

CSMT Bots (Obsolete)
Logikí

Add bots to your game for training

Autobox
Just_Visiting

Auto Collision/Selection Loading Boxes

Select Item
Wuzzy

Allows other mods to add a simple form to choose a single item.

Scripted World Editor
Neuromancer

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

Smart Chat
Clyde

A new, lightweight, simple and modular Chatsystem

Entity Control Function Library
Noodlemire

Adds functions to override and unregister entities.

verbana
fluxionary

verification and banning

Smart Vector Table
Noodlemire

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

Wield Events
mt-mods

Events for wield item switching

Gettime
1F616EMO

A api to get in-game hour/minute

DeltaTime
SkyBuilder1717

Adds deltatime API

Discrete Player API
Hypernoot

A library for games which attaches players to node grid

SmartFS
rubenwardy

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

Antigrief
sorcerykid

An API for validating node and item placement via a simple callback mechanism.

Compression Lib
The4spaceconstants

A library that provides functions to procedurally register compressed versions of nodes.

Chatcommand Library
LMD

Library for registering chatcommands.