The Mob API
TX_Miner

Provides a simple API for mobs

VizLib
OgelGames

Visulization Library

Bubbles
niwla23

Adds bubble machines

Tune JIT
rudzik8

Tunes LuaJIT parameters to improve server performance by preventing constant GC

Metadata Inspector
1F616EMO

Inspect or modify metadatas of a node

QR Code
Miniontoby

Create QR Codes in your world

Dirt Tunneler
Neuromancer

Makes dirt deeper and you can tunnel through it just by walking through it. Press spacebar/shift to tunnel upward/downward with auto placed ladders.

Rivets
Silver Sandstone

Adds rivets for decoration or locking blocks.

Wonderpick
LandarVargan

Adds a pickaxe that can dig almost any block

Central Message
Wuzzy

Simple API to show messages to the center of the screen to players.

Boulders
Neuromancer

Adds pushable boulders which spawn in dirt & stone. They tumble when they wind up on top of each other and cause damage when they fall on you.

FS51
Luke

Compatibility layer for formspecs

Bed Jumping
playduin

You may jump on the bed

Multitool Mod
thediamondlego

Adds a new tool that does the job of all the other tools(except hoe and screwdriver). Also has bouble the durability of a diamond tool!

Natural slopes for Hades Revisited
karamel

Add natural slopes for Hades Revisited

Natural Entities
LuantistDork

A lightweight API for spawning random entities

Privs Per World for Mineclonia
bgstack15

Automatically grant privileges to players in the nether

Minetest Systemd (API)
Piezo_

Debugging utility and compatibility tools for server owners and/or modpack creators

Unified Money Backend: SQLite3
1F616EMO

Storing Unified Money data into a SQLite3 database

Pizzas and cakes - square
MatyasP

add square pizzas

Speedrun Tools
SuperStarSonic

Speedrunning tools for Luanti

Minercantile
Mathias

Economy featuring a primitive supply and demand system for exchanging goods.

Ethereal: All-faces tree blocks
1F616EMO

All-faces tree block for Ethereal trees

NodeCore 1 slot mod
Fanticwor

makes Nodecore 8 times harder by removing 7 slots from your inventory

aw_edificiosdecuba_habana
JALdMIC

It has some buildings based on those in Havana

NodeCore Adamant: Revised
Winter94

Adds Adamant, a new metal ore, deep underground/

Surprise Blocks
Wuzzy

Randomly spawns surprise blocks closely about ground level.

Localized Server News
ronoaldo

Display localized server news when a player joins

K Wider Hotbar
ketwaroo

Increases the number of hotbar slots by displaying exta inventory rows

Omni Tool
ApolloX

3 tools in 1

obsidian
GigaByte

more uses for obsidian

Macro Crafting Manager
sorcerykid

Macro Crafting Manager provides a streamlined drag-and-drop interface for dividing and arranging item stacks within the craft-grid

CTF PluS! (ABANDONED)
UltraSans

Better textures for CTF and Minetest Game in general. (THIS IS ABANDONED)

Dye Mixer
LRV

This mod removes the mixes of dyes and the crafting recipes that allow you to dye wool and make them craftable in the Dye Mixer.

Cid Music Pack
ekl

A bunch of music for Cid Music Player

Refill
1F616EMO

Refill your hand slot after using up all items in that slot

Gauges
Calinou

Adds health and breath gauges above players.

AoM Settings
Sumi

Provides methods for both player level and server level settings

Noriel Sylvire's Minerals Core Modpack
Noriel_Sylvire

An API for automatically registering recipes, nodes and ore generation.

warn
Neocraft1293

simple mod to warn players