Compression Lib
The4spaceconstants

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

B.W Protection
Logikí

This gives API for bad words detection

imfs
Signal_

An immediate-mode, functional, reactive abstraction around Minetest's formspec system.

monster_api_gb
Giga_M

add an api to create bosses

Nametags2
Logikí

Allow objects had nametags with observers, colors and range

action queues
fluxionary

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

flinv
Luke

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

CentralAuth
1F616EMO

Player account unification across Luanti servers

Babelfish Redo
1F616EMO

Translate chat messages into other languages

AFK Indicator
1F616EMO

API to check player AFK status

DataMiner
sorcerykid

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

Persistent Effects
epCode

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

Tips
1F616EMO

Send tips to newcomers

Advanced Forceload
Kimapr

a better forceloading API

Wield Events
mt-mods

Events for wield item switching

YAML Config File Library
snowyu

Load or Save YAML config file

toolcap_monoids
fluxionary

an API to allow multiple sources to apply changes to a tools's capabilities.

NodeCore Staybs API
Winter94

Movement parameters for various 'staybs'

Minetest HTTP API QoS control queue
SX

Improve quality of important HTTP requests by grouping requests into service quality buckets.

Star
Wiz

A* Pathfinding algorithm implementation

Mapsync
BuckarooBanzai

Synchronize the ingame map with a lua-backend

Position listeners library
karamel

Players' position observing library

Node Damage
Noodlemire

Enables nodes to be partially damaged, and to be repaired afterwards.

Callbacks API
ANAND

callbacks_api is a framework for registering callbacks if the callback registration function exists, else returns gracefully.

GetName
kevins

Adds an API and tool to generate random names for NPCs, mobs, and places.

NucleoTest
DarkXWolf17

Battle Royale-like game. Provides an API and a reference implementation. Highly radioactive. Work in progress.

VizLib
OgelGames

Visulization Library

Advanced Breath and Health APIS
liteninglazer

Creates APIS to allow different players to heal health and allow different players to breathe different items.

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.

Random API
TheFanne

Provides a simple-to-use framework for selecting random objects with probabilities

Sway
lazerbeak12345

A simple inventory that makes use of Flow forms.

Discord Bridge
Lesha_Vel

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

Key Binding
1F616EMO

Register callbacks when a key is pressed, holded, or released.

Guider
1F616EMO

HUD markers for navigation

Library Mount
Panquesito7

API Framework for mounting objects.

status effects
fluxionary

api for defining player status effects

Prop Hunt Modpack
Jo5629_

Transform into nodes and with a minigame.

Priority Queue
Wiz

Associate items with priorities to order them.

deploader
LuantistDork

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

Multiblock Lib
Mindcool25

Multiblock structure handler