AoM Settings
Sumi

Provides methods for both player level and server level settings

Extended Protection
1F616EMO

Extended interaction restriction rule

Job Control Mod
sorcerykid

A more flexible alternative to the builtin minetest.after function

Operating System Detector
TPH

Checks the OS of the device running the mod.

filter++ lib
rstcxk

provides an API for filtering text

Weapons API
Stix

Adds an API to easily register custom weapons

Natural Entities
LuantistDork

A lightweight API for spawning random entities

Pluggable Helpers
sorcerykid

Automated dependency management of helper functions within a distributed architecture

ConfigFileLibrary
Tomlaus

A library that allows loading and saving data from config files.

Gettime
1F616EMO

A api to get in-game hour/minute

Priority Queue
Wiz

Associate items with priorities to order them.

Luarocks Wrapper
lazerbeak12345

Securely Wrap Luarocks packages without needing trusted mods.

Random Messages
1F616EMO

Register random announcements

Noriel Sylvire's Minerals Core Modpack
Noriel_Sylvire

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

Smart Vector Table
Noodlemire

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

Bedrock Markup Language
sorcerykid

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

Smart Chat
Clyde

A new, lightweight, simple and modular Chatsystem

verbana
fluxionary

verification and banning

Minetest HTTP API QoS control queue
SX

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

rcsv
Wuzzy

RFC-4180-compliant CSV parser and writer

NodeCore Staybs API
Winter94

Movement parameters for various 'staybs'

toolcap_monoids
fluxionary

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

GroupLib
rudzik8

General grouping API

typeof
TPH

Provides functionality similar to Luau's "typeof" function

Dialog Redo
1F616EMO

Flexable dialog API

Register, Attach & Detach
mzel1982

Register glowing 3D items and custom display nodes that you can easily attach to players, place on walls, or showcase on pedestals.

Position listeners library
karamel

Players' position observing library

Table Goodies
benrob0329

A small package for extra (can't live without) functions for working with tables.

Minetest Systemd (API)
Piezo_

Debugging utility and compatibility tools for server owners and/or modpack creators

SmartFS
rubenwardy

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

Database Manager
AFCM

Database Manager API

PostgreSQL Library
Tomlaus

Library for PostgreSQL Db.

MFSM Multiple Finite State Machine
Sumi

Allows for multple states to be active, while maintaining typical state machine behavior. Good for gamestate and mobs.

YALib
hutzdog

Yet Another Library

Telegram
neko259

Integration with telegram messenger chat

Cid Music Player
ekl

Plays music

Lockbox
Jo5629_

Library for cryptography/encryption functions.

Matrix Chat
joenas

This mod creates a bridge between a Matrix channel and the in-game chat!

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.

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.