Callbacks API
ANAND

callbacks_api is a framework for registering callbacks if the callback registration function exists, else returns gracefully.

PuzzleMap
Warr1024

Puzzle/Adventure Map System using Node Protection Mechanic

VizLib
OgelGames

Visulization Library

rPlace Analysis GUI
1F616EMO

Formspec GUI for rPlace Analysis

NodeCore Playertags
Kimapr

nodecore playertags ported to other games

Function Delayer
Hybrid Dog

Allows executing functions after a delay to reduce possible lag (EDD scheduler?)

Error Mail
1F616EMO

Send mail to the admin with error traceback

Node Placer Saving
1F616EMO

Put node placer data into the node

Subway Tracksides
GWLT

Add tracksides for your subway map.

NC Pumbob
Winter94

adds carvable and sealable pumice bobbers/floaters

Frozen Energy
bell07

Use frozen energy crystals to freeze water

Lavaplop
DS

Makes lava plop every now and then

Advanced Forceload
Kimapr

a better forceloading API

Batch Screwdriver
niwla23

With this you can rotate all nodes in a row at once

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.

Tile Floors
ClassicAdam

Various colors of tile flooring in 16px and 256px res

AutoClimb
MrDraxs

Adds autoclimb, idea by mrdraxs and code by ( FatalError, once again seasoned ) and ( ElCeejo ).

modinfo
fluxionary

get info about the mods running on a server

World of Life
LMD

Simulates 3D cellular automata in your entire world. WARNING: you will lose items & buildings in your world.

Minebase Core
ThatCommand

Adds APIs and new dynamic functionalities.

Kill Button
niwla23

Allows you to kill yourself from the UI

Server Logs
Impulse

Shows server logs to privileged users

L-System Tree Utility
Wuzzy

A form to easily spawn L-system trees, aimed at mod developers.

verbana
fluxionary

verification and banning

Local Time and Date Api
Bob64

This is a minetest mod that provides an api for other mods to use to get a user's preferred date and time format/time zone based on their configured settings for this mod.

evolving_pickaxe
Neocraft1293

a mod that adds a pickaxe that improves when used

DeltaTime
SkyBuilder1717

Adds deltatime API

Modding Commands
DragonWrangler

Adds Hopefully helpful commands for modding

Gauges
Calinou

Adds health and breath gauges above players.

Stopwatch
sorcerykid

Stopwatch is Lua-based benchmarking API for Minetest developers

Random (Useful) stuff
pl608

A library that adds well... Random Stuff

QR Code
Miniontoby

Create QR Codes in your world

Fly-B-Gone!
Hugues Ross

Hides butterflies/fireflies

Prejoin Messages
Gregon

Notifies players when a player starts connecting to the server

Vlf Falling Suprise
VoxelForge

A survival challenge for VoxelForge With a nasty suprise... Beware: This may grief (Or even destroy) your world

LocalChat
qPexLegendary

Adds local and global chat

Sway
lazerbeak12345

A simple inventory that makes use of Flow forms.

balanced diet
fluxionary

api for specifying multiple dimensions to eating

Block Bomber Mg
MisterE

Blockbomber as an arena_lib minigame

Test Harness
IRI

Provides an automated testing framework by simulating player behavior on a server. It allows developers to create, register, and run tests to their packages