Mapsync
BuckarooBanzai

Synchronize the ingame map with a lua-backend

i3
jp

A next-generation inventory

craftsystem
fluxionary

API for craft registration which automatically deals w/ replacements

Giad
ekl

WIP Library for creating walking vehicles

Power Rangers Modpack
LC Creations

Adds power rangers and an API to create your own.

fmod
fluxionary

flux's mod boilerplate

futil
fluxionary

flux's utility mod

Flow
luk3yx

A formspec library that automatically positions and sizes elements

AdvTrains Livery Tools
Marnack

Livery tools for Advanced Trains mods.

Mob Core
ElCeejo

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

smartshop (flux's fork)
fluxionary

a smarter and easier shop

Comboblock
sirrobzeroone

Allows the stacking of slabs vertically and horizontally

Advanced Biome Decoration API
EmptyStar

An API for creating advanced, complex biome decorations

Arena_lib
Zughy

Library working as a core for any mini-game you have in mind

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.

AirUtils
APercy

A lib for airplanes and some useful tools

Library Mount
Panquesito7

API Framework for mounting objects.

Mobs Redo
TenPlus1

Adds a mob api for mods to add animals or monsters etc.

markdown2formspec
Just_Visiting

A markdown to Formspec Utility

Geodes Library
alerikaisattera

API/library for creating geodes

Geodes
AwesomeDragon97

Adds amethyst geodes and an API for making custom geodes.

SzUtilPack
Warr1024

A collection of misc dependency-free utilities primarily for server hosts.

Splooshy Bombs API
ekl

WIP API and admin tools for block-flinging bombs

NucleoTest
LissoBone

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

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