mod utilities
theFox

Providing some utilities that can be used by other mods.

Scarlet
sorcerykid

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

Repixture Crafting Compatibility
Silver Sandstone

Converts crafting recipes to be compatible with Repixture.

City Block II
sorcerykid

Disables use of water and lava buckets within a designated area

Polygraph
sorcerykid

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

use_texture_alpha workaround
1F616EMO

Fix boolean use_texture_alpha on MT5.9+

Slope Lib
epCode

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

QA-Block
bell07

A mods development / QA helper

Definition Ripper
Warr1024

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

Treasurer
Wuzzy

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

Luwua
LMD

:3

Cycles
1F616EMO

API to cycle though block/item state on certan events

Matrix Chat
joenas

This mod creates a bridge between a Matrix channel and the in-game chat!

LEEF class lib
fatalerror420

Simple class system for minetest, with a inbuilt read only table system

LEEF math (CPML)
fatalerror420

integrates CPML library from the Love framework community into Minetest

LEEF filesystem
fatalerror420

adds dependencies for binary file reading, as well as other file utilities. Orignally from Modlib

futil
fluxionary

flux's utility mod

fmod
fluxionary

flux's mod boilerplate

Controls
mt-mods

Utility library for control press/hold/release events

TGA Encoder
erle

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

Display Modpack
mt-mods

Provides mods with dynamic display and font display: clocks, signs, and more.

panel_lib
Zughy

Library to easily create complex HUDs

Player Physics API with Monoid Support
TestificateMods

A patched version of playerphysics with support for player_monoids.

ActiveFormspecs
sorcerykid

ActiveFormspecs is a framework that abstracts the builtin formspec API of Minetest

LootChests Modpack
mt-mods

Modpack adding a lot of various loot containers across the world to be found and providing an API, resources and integrations for other mods

Logging
1F616EMO

Create logging functions for mods easily

Accuracy
shaft

Accuracy library for mods introducing ranged weapons.

Player Effects
Wuzzy

Framework for temporary effects for players.

Configuration Panel
sorcerykid

API extension that allows seamless loading of mod configuration at runtime

Lighting Monoid
TestificateMods

Provides a compatibility API for player lighting

Fluid Container API
IcyDiamond

Library for nodes containing fluids

mtzip
BuckarooBanzai

zip-library

Beds Redux
sorcerykid

A complete rewrite of the Beds mod with many additional features

Promise
mt-mods

promise library

ts_workshop
Thomas-S

API for workshops

Appliances API
SFENCE

API for create appliances in other mods powered by technic, mesecons or hand.

Adaptation lib and mods
SFENCE

Key based adaptation database of items.

Climate API
TestificateMods

A powerful engine for weather presets and visual effects. Requires a weather pack like Regional Weather.

3D Armor Light
AntumDeluge

Wielded Light for 3d_armor

Mapblock Lib
BuckarooBanzai

mapblock serialization functions