Minetest Emotions
ResendeTech

Adds new feelings in the form of blocks

3D Spikes
BryanGruik15

Adds spikes to the game.

Subspacewalker
bell07

Go trough walls, rock or lava using Subspace Walker tool

Mycorners
Don

Put decorative corners on blocks.

Discrete Player API
Hypernoot

A library for games which attaches players to node grid

For Sale Sign for Unified Money
1F616EMO

Area Exchange with Unified Money System

Fragments
Amaz

A mapgen with a goal, with things needed to advance to the next level.

Placeholder
BuckarooBanzai

placeholder node / a better unknown node

Spawn redo
cathaya7d4

Drop-in replacement for default/spawn for more third-party biomes

Sling
tacotexmex

Sling enables item stack and single item throwing of any item.

Colorscreens
DELTA_FORCE

Decorations that can also be used as an actual greenscreen or other colorscreen.

Weapons API
Stix

Adds an API to easily register custom weapons

Towny
livphi

Town based protection system

IntelligenceFramework
PlamiumAI

Provide an AI RNN API for developers.

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.

Roulette Table
LiyahMackenzie

Adds a roulette minigame with a table block, to gamble away your possessions.

Strong Wooden Pickaxe
mufigilang

Add strong wooden pickaxe that destroy stone as fast as diamond pickaxe

Inventory Manager
Flay Krunegan

Allows you to view and edit the inventory of the players

Sneeker
AntumDeluge

An explosive nuisance.

Cube Nodes
Andrey01

Adds colorful blocks with various symbols as letters, digits, punctuation, emoji and special signs.

Face Objects
1F616EMO

Calculate the facing of objects

Obelisk - Obelisk.jar [Inspired by lizardmeninc Obelisk]
colon

shhh it's here.

Select Item
Wuzzy

Allows other mods to add a simple form to choose a single item.

NC modified biome
xMajedz

NodeCore has too much grass

Skyhell Together
Kimapr

Put all skyhell players on one shared island (NodeCore)

NodeCore CatRealm
Warr1024

Adds a cat-themed dimension with unique ores and over-powered tools

Gizmo's Of Carbon Machinations
ThatGhzGamer

Adds various charcoal related items such as a Marvelous Hammer to Compress things, New Gear, New Diamonds, Charcoal and Willow Charcoal.

Limited Lives
Xenon

Limits the times players can die.

My Mulch
Don

Turns leaves and other items to mulch blocks

Point Teleporter
Wuzzy

Adds a short-distance teleportation device which allows the user to instantly change the position in front of a pointed node.

Envelopes
archfan7411

Write and address an envelope to another player!

Mocap
mrGoodWolf

Let's players record themselves and playback the recording (NOT VIDEO RECORDING)

NodeCore Runestones
Winter94

Play games of chance, or decorate your builds!

Instabreak
Mint

Instantly break (most) construction blocks.

Plastic Box
Starbeamrainbowlabs

Adds a recolourable plastic box. Fork of @cheapie's version with improvements.

Angle Grinder
Warr1024

Snap camera to discrete angles

World Borders
argyle

Add impenetrable barriers to the sides and bottom of the world.

filter++
rstcxk

censors swears in the player chat using the filter++ liberary

Shields Modpack
michi16bit

Add 2 new shields

Cartographer for Repixture
Hugues Ross

Adds regional maps that you can craft and place (Repixture version)