Send Stack
ChimneySwift

Adds a command to send the stack you are holding to another player (requires ban priv)

Web chat
seckl

Makes the in-game chat accessible through a web browser.

Colored Chat Text
Bob64

This makes the chat messages a different color depending on what you set it to in the settings.

Grow Dry Grass
Silver Sandstone

Makes dry grass spread on savanna dirt.

No Touch, Griefer!
ROllerozxa

Per-IP interact privilege bans

TNTTag
debiankaios

A player is holding TNT which is about to explode; they must tag other players to get rid of it

Luablock
LC Creations

Adds blocks that can execute lua code. Admin purposes only.

Portal Rail
BigBear

Minecart rail that teleports exactly 500m in direction of travel

Chat Visual
Itz-Noah

Need a way to distinguish between staff and players?

NodeCore PumMINE
Winter94

Mineable pumice

Archipelago for Piranesi
Warr1024

Connect Piranesi Restoration Project to Archipelago Multi-world Randomizer

Drawstruct
Xenon

Draw or generate random structures

Weapons API
Stix

Adds an API to easily register custom weapons

Trowel for wall building
Linuxdirk

Vertically modify adjacent nodes of the same type with a single click.

Key Combos
epCode

A lib for adding actions when certain keys are pressed in order.

Player IP Log
simondanerd

Mod for any game which logs what users join, and records their IP address. Content saved as a txt file in the worlds directory.

Debugging Console
sorcerykid

Provides an in-game HUD to easily monitor debug output

Click Speed Detector
Tomlaus

A mod that ensures you can only place a node every 0.16 seconds. It is intended for servers to counter players using auto-clickers.

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.

Light Tool
Extex

Adds a tool and api that creates beams of light

Beerchat
mt-mods

standalone chat channel mod

AFK Kick (AFK Indicator)
1F616EMO

Kick inactive players

Aratox Anticheat
zanderdev

Severside Anticheat. Remove cheaters from your server automatically.

Advanced Breath and Health APIS
liteninglazer

Creates APIS to allow different players to heal health and allow different players to breathe different items.

Assets_Warehousepart2
JALdMIC

Part 2 of Assets_Warehouse

item_monoids
fluxionary

an API for controlling item properties via monoids

NodeCore Vuga
Winter94

Generates Vuga Underground.

Extra Stone Utilities
XxCrisThor1012xX

Adds new uses of stone

Minetest Teams
pl608

simple multiplayer team system

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!

Level API
Hypernoot

A library for games to load levels defined as schematics

Smart Vector Table
Noodlemire

API that adds a way to create tables indexed by 3D Vectors.

Tips
1F616EMO

Send tips to newcomers

List Items Chat Command
AntumDeluge

Chat command that lists registered items & entities.

Horadric cube
Xevin

An artifact that can transmute items

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.

NodeCore Coal
Winter94

Adds 3 ores of coal to NodeCore.

Cid Music Player
ekl

Plays music

World Action Script
AiTechEye

Programming+ electronics

Death Coords
Niden

Show Death Coordinates