Sway
lazerbeak12345

A simple inventory that makes use of Flow forms.

Antigrief
sorcerykid

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

Nametags2
Logikí

Allow objects had nametags with observers, colors and range

HTML to Luanti Hypertext
1F616EMO

Convert HTML to Luanti Hypertext for formspecs

afk_api
fluxionary

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

Player Settings
1F616EMO

Player-specific settings

Minetest Teams
pl608

simple multiplayer team system

Compression Lib
The4spaceconstants

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

Wield Events
mt-mods

Events for wield item switching

Quest Framework
TeTpaAka

Simple framework to define quests.

FS51
Luke

Compatibility layer for formspecs

name monoid
fluxionary

flexible control of a player's nametag

CentralAuth
1F616EMO

Player account unification across Luanti servers

deploader
LuantistDork

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

Seasons Clock
solsword

API for getting various "season" parameters based on server time and a few customiable settings. Doesn't change gameplay; just a library that other mods can use to do seasonal things.

hand_monoid
fluxionary

player monoid for controlling the look and abilities of the player's hand.

Persistent Effects
epCode

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

SmartFS
rubenwardy

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

Lush
rstcxk

fully featured shell interpreter

Extended Protection
1F616EMO

Extended interaction restriction rule

MFSM Multiple Finite State Machine
Sumi

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

TPH's Basic Filesystem
TPH

API for loading files into a basic readable format as well as loading and converting conf files

Table Goodies
benrob0329

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

Bedrock Markup Language
sorcerykid

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

Grenades API
LandarVargan

Adds an API for easily creating grenades

Smart Vector Table
Noodlemire

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

Pedestals Api
mzel1982

Register your own mesh pedestals.

craftsystem
fluxionary

craft registration API which automatically deals w/ replacements

Minetest Systemd (API)
Piezo_

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

Function Delayer
Hybrid Dog

Allows executing functions after a delay to reduce possible lag (EDD scheduler?)

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.

Advanced Rangefinder
sorcerykid

Extends the API with search capabilities for entities

Noriel Sylvire's Minerals Core Modpack
Noriel_Sylvire

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

timehud
bookgirl

Minimal HUD timer API

GroupLib
rudzik8

General grouping API

Telegram
neko259

Integration with telegram messenger chat

Item Tracking
Impulse

Provides a API to mod developers to track which inventories items are in.

Minebase Core
ThatCommand

Adds APIs and new dynamic functionalities.

Isogen
BuckarooBanzai

Generate isometric images from ingame builds

verbana
fluxionary

verification and banning