Archaeology
SkyBuilder1717

Adds an looting and API in archaeologing

Interchangeable Hands
octacian

Demonstration of Luanti's capability to dynamically change the player hand.

Bedrock Markup Language
sorcerykid

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

Anti Exploit
LMD

Protects against exploits

action queues
fluxionary

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

Prop Hunt Modpack
Jo5629_

Transform into nodes and with a minigame.

craftsystem
fluxionary

craft registration API which automatically deals w/ replacements

more_player_monoids
fluxionary

more player monoids

Wield Events
mt-mods

Events for wield item switching

filter++ lib
rstcxk

provides an API for filtering text

Smart Chat
Clyde

A new, lightweight, simple and modular Chatsystem

Exploding Chest
Coder12

Api-mod to allow containers like chest to explode if it contains explosive materials.

Echo
1F616EMO

In-game notification system

Advance ore API
Sere Motsatt

Create complex minerals the easy way

group:any
1F616EMO

Item group applied to ALL items for crafting recipes.

Multiblock Lib
Mindcool25

Multiblock structure handler

YAML Config File Library
snowyu

Load or Save YAML config file

Grenades API
LandarVargan

Adds an API for easily creating grenades

Signs Redux
sorcerykid

Signs Redux is a complete rewrite of default signs that adds many new features

Minetest HTTP API QoS control queue
SX

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

Advanced Breath and Health APIS
liteninglazer

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

YL Scheduler
AliasAlreadyTaken

Execute tasks based on utc

Extended Protection
1F616EMO

Extended interaction restriction rule

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.

Priority Queue
Wiz

Associate items with priorities to order them.

anarchy
solsword

Anarchy PCG library (see https://cs.wellesley.edu/~pmwh/anarchy/lua/ w/ docs at https://cs.wellesley.edu/~pmwh/anarchy/lua/docs32/index.html)

Discrete Player API
Hypernoot

A library for games which attaches players to node grid

canonical name
fluxionary

api to get the proper capitalization of a name

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.

BigNum
ThePython10110

A library that adds a data type for arbitrary precision integers

Random API
TheFanne

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

node entity queue
fluxionary

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

Timekeeper
sorcerykid

Timekeeper acts as a centralized dispatcher for all time-sensitive routines

timehud
bookgirl

Minimal HUD timer API

Pluggable Helpers
sorcerykid

Automated dependency management of helper functions within a distributed architecture

Luarocks Wrapper
lazerbeak12345

Securely Wrap Luarocks packages without needing trusted mods.

Advanced Chat
LMD

A library for advanced chatting.

B.W Protection
Logikí

This gives API for bad words detection

Level API
Hypernoot

A library for games to load levels defined as schematics