Lockbox
Jo5629_

Library for cryptography/encryption functions.

YALib
hutzdog

Yet Another Library

Operating System Detector
TPH

Checks the OS of the device running the mod.

Advance ore API
Sere Motsatt

Create complex minerals the easy way

Level API
Hypernoot

A library for games to load levels defined as schematics

Squill
Luke

A subset of SQL. No complex installation required.

Function Delayer
Hybrid Dog

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

description_monoids
fluxionary

API to allow multiple mods to make modifications to an itemstack's description

Luarocks Wrapper
lazerbeak12345

Securely Wrap Luarocks packages without needing trusted mods.

Japanese Name
Logikí

transform your player name to japaNESE (joke)

Item Tracking
Impulse

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

aSignals
Sumi

Signal event bus API including SIGNAL, LISTEN and CONDITIONAL functions

Advanced Chat
LMD

A library for advanced chatting.

verbana
fluxionary

verification and banning

Random API
TheFanne

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

Discrete Player API
Hypernoot

A library for games which attaches players to node grid

Dialogs
1F616EMO

Dialogs with options

Callbacks API
ANAND

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

typeof
TPH

Provides functionality similar to Luau's "typeof" function

Random Messages
1F616EMO

Register random announcements

toolcap_monoids
fluxionary

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

Minetest Teams
pl608

simple multiplayer team system

Multiblock Lib
Mindcool25

Multiblock structure handler

ConfigFileLibrary
Tomlaus

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

Dialog Redo
1F616EMO

Flexable dialog API

VizLib
OgelGames

Visulization Library

Quest Framework
TeTpaAka

Simple framework to define quests.

action queues
fluxionary

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

Shop Dialog
1F616EMO

Formspec-based shop dialog

PostgreSQL Library
Tomlaus

Library for PostgreSQL Db.

NameGen
cronvel

Name generator API.

Anti Exploit
LMD

Protects against exploits

SmartFS
rubenwardy

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

Virt
frogTheSecond

A library for (qemu) virtual machines

AFK Indicator
1F616EMO

API to check player AFK status

more_player_monoids
fluxionary

more player monoids

Key Binding
1F616EMO

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

name monoid
fluxionary

flexible control of a player's nametag

Local Time and Date Api
Bob64

This is a minetest mod that provides an api for other mods to use to get a user's preferred date and time format/time zone based on their configured settings for this mod.

Chat Games API
Impulse

An API to build chatgames like those in the chatgames