QoS
SX

Minetest HTTP API QoS control queue

Mapblock Lib
BuckarooBanzay

mapblock serialization functions

Timed World Modifiers library
karamel

Environmental ABM that could be triggered on a very wide range of nodes but only a few at a time.

Subcommands
Emojiminetest

API to make commands with subcommands

Natural slopes library
karamel

Library to simply add slopes to regular nodes and include them on map generation and when changing the landscape.

Position listeners library
karamel

Players' position observing library

Autobox
Just_Visiting

Auto Collision/Selection Loading Boxes

i3
jp

A next-generation inventory

Controls
BuckarooBanzay

Utility library for control press/hold/release events

Name Generator
FaceDeer

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

Achievements Lib
Zughy

API to store all your achievements in one place

Mob Core
ElCeejo

A Mob API meant to expand upon mobkit and bring easy to use features for creating new Mobs.

Scarlet
sorcerykid

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

Timekeeper
sorcerykid

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

Debugging Console
sorcerykid

Provides an in-game HUD to easily monitor debug output

Formspec AST
luk3yx

A library to help other mods interpret formspecs.

Basic Ownership
sorcerykid

An efficient and flexible node-based protection scheme for multiplayer worlds

Pluggable Helpers
sorcerykid

Automated dependency management of helper functions within a distributed architecture

Beds Redux
sorcerykid

A complete rewrite of the Beds mod with many additional features

Doors Redux
sorcerykid

A complete rewrite of the Doors mod with many additional features

Anti Exploit
LMD

Protects against exploits

Job Control Mod
sorcerykid

A more flexible alternative to the builtin minetest.after function

Advanced Rangefinder
sorcerykid

Extends the Minetest API with search capabilities for entities

Template to Easily Make Fancy Voxelized Models
Noodlemire

Provides voxelmodel.obj, a model designed to be shaped by changing its texture, in order to easily create fancy voxelized models.

Extended Tooltips
Wuzzy

Support for custom tooltip extensions for items

Library Mount
Panquesito7

API Framework for mounting objects.

Calendar
Wuzzy

A simple calender system to track the passage of days

Villages
Sokomine

Explore the world and find villages of diffrent types. Buy a house in a village and settle down.

Keyevent
DS-minetest

Adds an event for when player presses a key.

Antigrief
sorcerykid

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

Gettime
Emojiminetest

A api to get in-game hour/minute

Placeable Buckets for Catching Rainwater
Noodlemire

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

Newspaper
Emojiminetest

A Customizable newspaper

Node Damage
Noodlemire

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

Pencil
Emojiminetest

Added a api to set the "infotext" for a block

GetName
kevins

Adds an API and tool to generate random names for NPCs, mobs, and places.

Cartographer
Hugues Ross

A mapmaking API.

SSCSM implementation
luk3yx

A server-sent CSM library.

Comboblock
sirrobzeroone

Allows the stacking of slabs vertically

Climate API
TestificateMods

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