Keyevent
DS

Adds an event for when player presses a key.

Function Delayer
Hybrid Dog

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

Fbt Core
Forburnt

A set of utils for other fbt_* mods

Noriel Sylvire's Minerals Core Modpack
Noriel_Sylvire

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

NucleoTest
LissoBone

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

Compression API
The4spaceconstants

An API that provides functions to procedurally register compressed versions of nodes.

Entity Control Function Library
Noodlemire

Adds functions to override and unregister entities.

Node Damage
Noodlemire

Enables nodes to be partially damaged, and to be repaired afterwards.

Simple notification wrapper
KirowL

This project offers a Notification System API to display temporary messages on the player's screen, allowing seamless integration of notifications into gameplay.

Anti Exploit
LMD

Protects against exploits

Sway
lazerbeak12345

A simple inventory that makes use of Flow forms.

description_monoids
fluxionary

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

Minetest Systemd (API)
Piezo_

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

Wield Events
mt-mods

Events for wield item switching

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.

Bitwise Operations
sorcerykid

A pure-Lua implementation of common bit-manipulation functions

Position listeners library
karamel

Players' position observing library

Inventory Change Callback
luarocks

Provide a global callback for handling player inventory changes.

Phonics Library
Neuromancer

Provides a library for creating Phonics (Learn how to read) mods in different languages.

more_player_monoids
fluxionary

more player monoids

LCD Font
Nazalassa

A simple font for font_api

Interactive Item API
Jose_ManuelS18

Provides an API to make it easier to implement items' inner workings.

Unified Stamina API
TestificateMods

Provides a universal API for handling different mods that provide a stamina bar

Central Message
Wuzzy

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

action queues
fluxionary

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

ConfigFileLibrary
Tomlaus

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

TPH's Doors API Redo
TPH

(INTENDED FOR DEVELOPERS) Attempts to ease and better simplify door mechanics + registration

Dialogs
1F616EMO

Dialogs with options

Interchangeable Hands
octacian

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

flinv
Luke

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

Autobox
Just_Visiting

Auto Collision/Selection Loading Boxes

Database Manager
AFCM

Database Manager API

Pluggable Helpers
sorcerykid

Automated dependency management of helper functions within a distributed architecture

Minebase Core
ThatCommand

Adds APIs and new dynamic functionalities.

Antigrief
sorcerykid

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

Minetest Teams
pl608

simple multiplayer team system

toolcap_monoids
fluxionary

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

Job Control Mod
sorcerykid

A more flexible alternative to the builtin minetest.after function

SmartFS
rubenwardy

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

Signs Redux
sorcerykid

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