name monoid
fluxionary

flexible control of a player's nametag

craftsystem
fluxionary

craft registration API which automatically deals w/ replacements

flinv
Luke

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

Fbt Core
Forburnt

A set of utils for other fbt_* mods

Advanced Forceload
Kimapr

a better forceloading API

Mesecons Stealthnode
Clyde

Register your own Ghoststones.

Central Message
Wuzzy

Simple API to show messages to the center of the screen to players.

NucleoTest
LissoBone

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

SmartFS
rubenwardy

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

Function Delayer
Hybrid Dog

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

Object UUIDs
Silver Sandstone

Assigns a persistent UUID to every object.

Isogen
BuckarooBanzai

Generate isometric images from ingame builds

Library Mount
Panquesito7

API Framework for mounting objects.

AFK Indicator
1F616EMO

API to check player AFK status

Minebase Core
ThatCommand

Adds APIs and new dynamic functionalities.

action queues
fluxionary

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

CentralAuth
1F616EMO

Player account unification across Luanti servers

HTML to Luanti Hypertext
1F616EMO

Convert HTML to Luanti Hypertext for formspecs

canonical name
fluxionary

api to get the proper capitalization of a name

Minetest Teams
pl608

simple multiplayer team system

Entity Control Function Library
Noodlemire

Adds functions to override and unregister entities.

Face Objects
1F616EMO

Calculate the facing of objects

Smart Chat
Clyde

A new, lightweight, simple and modular Chatsystem

Trucraft
mt-mods

An alternative crafting system done entirely in the world.

Vision Lib
mt-mods

Common library for PolySaken's mods.

Grenades API
LandarVargan

Adds an API for easily creating grenades

Archaeology
SkyBuilder1717

Adds an looting and API in archaeologing

Advanced Rangefinder
sorcerykid

Extends the Minetest API with search capabilities for entities

Tasks Framework
AntumDeluge

Framework for adding tasks & quests.

Dialogs
1F616EMO

Dialogs with options

Template to Easily Make Fancy Voxelized Models
Noodlemire

Provides voxelmodel.obj, a model designed to be shaped by changing its texture, in order to easily create fancy voxelized models.

Scripted World Editor
Neuromancer

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

Minetest HTTP API QoS control queue
SX

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

Gettime
1F616EMO

A api to get in-game hour/minute

Persistent Effects
epCode

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

Metatable Metamethods Fixes + Customization
TPH

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

Player Settings
1F616EMO

Player-specific settings

node entity queue
fluxionary

a queue for spreading out the generation of node entities over multiple server steps (smartshops, signs, itemframes, etc).

Wield Events
mt-mods

Events for wield item switching

Flow Extras
lazerbeak12345

An experimental collection of extra widget APIs for flow