country_lib
Zughy

small util library providing country localised names and flags

Zero-Effort Custom Minerals
Piezo_

A tool for registering entire materials, complete with ore generation, tool-sets and automatically generated sprites with almost no effort required

Custom Falling Nodes
TenPlus1

Tweak falling blocks to add custom controls

Node Touch Action
Neuromancer

Pass in a node name and a function, and every time a player touches that node, the function happens

Calendar
Wuzzy

A simple calender system to track the passage of days

Placeable Buckets for Catching Rainwater
Noodlemire

Allows empty buckets to be placed as nodes in order to collect rainwater.

Name Generator
FaceDeer

A lua library for generating random names based off of rulesets and syllable lists.

Flow Extras
lazerbeak12345

An experimental collection of extra widget APIs for flow

Sounds
AntumDeluge

A set of free sounds & API.

Fireworks Redo
niwla23

Adds some better looking fireworks

Components Library
Mindcool25

Library for generating components based on base materials

TPH's Wielditem
TPH

Wielded Item Events with Prepackaged Wield3d + Wielded Light Functionality!

Polygraph
sorcerykid

A formspec-based charting API providing a rich set of output parameters

ASCII Art Schematics
Warr1024

Manage Minetest schematics as ASCII art.

Minetest test framework
BuckarooBanzai

Provides an api to register test functions for integration-tests.

Item Extensions
Sumi

Support for more callbacks for items, such as `on_step` and `on_select`

City Block II
sorcerykid

Disables use of water and lava buckets within a designated area

Map Octree
giov4

A library for saving large world regions as compressed octree snapshots. Useful for schematics, backups, and fast node queries on huge areas without exhausting server memory.

SkillsFramework
domtron vox

SkillsFramework provides an API for creating and managing skills.

mod utilities
theFox

Providing some utilities that can be used by other mods.

Repixture Crafting Compatibility
Silver Sandstone

Converts crafting recipes to be compatible with Repixture.

Dice API
Extex

API for creating physical dice

holograms
bookgirl

Visual holograms for your server for information.

Debug
LMD

Debugging on steroids

Botic Font
Pyrollo

Botic font mod for Font API

Epic
BuckarooBanzai

Enhanced Programmer for Ingame Control

Luwua
LMD

:3

use_texture_alpha workaround
1F616EMO

Fix boolean use_texture_alpha on MT5.9+

Scarlet
sorcerykid

Scarlet is a thin-wrapper library that simplifies the layout of formspec elements.

Slope Lib
epCode

A lib that calculates the average 3d slope of surrounding nodes from a position and raduis.

stimers
bookgirl

Server-side timer and cooldown API with Unix expiration storage

Definition Ripper
Warr1024

Generate inert facades from node/item definitions for use in other games

QA-Block
bell07

A mods development / QA helper

Bitwise Operations
sorcerykid

A pure-Lua implementation of common bit-manipulation functions

Cycles
1F616EMO

API to cycle though block/item state on certan events

Intllib
kaeza

Internationalization library.

Treasurer
Wuzzy

A framework to define and distribute random treasures into the world.

Library Mount
Panquesito7

API Framework for mounting objects.

panel_lib
Zughy

Library to easily create complex HUDs

TGA Encoder
erle

A TGA Encoder written in Lua without the use of external Libraries.