Formspec AST
Luke

A library to help other mods interpret formspecs.

moreblocks and stairsplus
fluxionary

adds various blocks to the game

Tubelib2
joe7575

A library for mods which need connecting tubes / pipes / cables or similar.

Guns4dWorkbench
Jo5629_

Craft guns and their components with an added workbench.

Dungeon loot chests
X-DE

Adds loot chests, a command to prevent spawning loot in the chest so you can save a schematic with a loot chest, adds 2 functions to create loot in other chests

Geodes Library
alerikaisattera

API/library for creating geodes

Computing
Lunovox

Add multiple computing devices such as: Smartphones and Desktops. It supports several apps integrated by other mods.

Mana
Wuzzy

Adds a mana attribute to players, can be used as energy source for magical items, etc.

Appliances API
SFENCE

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

Advtrains Info Displays
Nazalassa

A library that uses font_api to render text outside Advtrains trains. Supports several displays per wagon.

Natural slopes library
karamel

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

markdown2formspec
Just_Visiting

A markdown to Formspec Utility

Home Point
ApolloX

A /sethome and /home

LEEF b3d
fatalerror420

A b3d reader, cloned from modlib. Requires LEEF-filesystem, requires LEEF-Math for nodes module.

Regrowing Fruits
philipmi

Fruits on trees from various mods will regrow.

Luamap
MisterE

An easy-to-use api for lua mapgens that takes the pain out of mapgen coding. Focus on mapgen logic, not on voxelmanipulation.

LEEF math (CPML)
fatalerror420

Integrates CPML library from the Love framework community into Luanti

Magma Conduits
FaceDeer

Removes default mapgen lava and adds widely-spaced vertical lava "veins".

LEEF class lib
fatalerror420

Simple class system, with a inbuilt read-only table system

LEEF filesystem
fatalerror420

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

Geodes
AwesomeDragon97

Adds amethyst geodes and an API for making custom geodes.

advtrains_attachment_offset_patch
doxygen_spammer

Workaround to mitigate Luanti bug 10101, specifically for advtrains

HUD FS
Luke

A library to make HUDs from formspecs

Advanced Biome Decoration API
EmptyStar

An API for creating advanced, complex biome decorations

Named Waypoints
FaceDeer

A library for managing waypoints shown in player HUDs that can be discovered by exploration.

Vote
rubenwardy

Adds an API to allow players to vote

In the Fog
Jo5629_

Herobrine has entered your world.

Fireworks Redo
niwla23

Adds some better looking fireworks

Calendar
Wuzzy

A simple calender system to track the passage of days

Commodity market
FaceDeer

Provides API support for various in-world commodity markets

Flow Extras
lazerbeak12345

An experimental collection of extra widget APIs for flow

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

Ranged Weapon Framework (rawf)
LandarVargan

A ranged weapon framework

TPH's Wielditem
TPH

Wielded Item Events with Prepackaged Wield3d + Wielded Light Functionality!

Phonograph
1F616EMO

Play music from albums

World Settings
Codiac

Supports per world settings in Luanti games and mods

Custom Falling Nodes
TenPlus1

Tweak falling blocks to add custom controls

Name Generator
FaceDeer

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

Dice API
Extex

API for creating physical dice

Power Rangers Modpack
LC Creations

Adds power rangers and an API to create your own.