Glostone Building Blocks
Wovado

Adds basic glostone-based building materials

Instabreak
Mentos

Instantly break (most) construction blocks.

Maple tree
Duvalon

Adds a maple tree placed during world generation.

digicolor
fluxionary

node whose color can be set via digilines

Drawstruct
Xenon

Draw or generate random structures

Electric Screwdriver
skiscratcher

A supplement to screwdriver, to speed up placing blocks in a repetitive way

NC More Storage
Winter94

Adds More Storage Containers to NodeCore

Ultra colors
mobilex1122

mod with super bright colors blocks

Dice
Wuzzy

Decorational dice blocks which face a random direction.

Explosion proof obsidian
Miner34

Adds an explosion proof obsidian.

NodeCore Nature: Revised
Warr1024

Updated, fixed, enhanced edition of Winter94's NodeCore Nature

Map Cursor
Blocky Player

Adds blocks like arrows, pointers and signals. For mapmakers who need to point players somewhere.

Bell Chimes
sorcerykid

Adds a set of church bells that are chimed automatically at different periods.

More Mese Post Lights!
1F616EMO

Add more mese post light

Hexagonal
GreenXenith

Proof of concept for hexagonal nodes

Chunk Keeper
ApolloX

Keep sections of nodes loaded/running code and growing

Nodecore Stucco
Avicennia_g

Adds a few decorative building nodes to Nodecore through simple and crude masonry.

Ocular Networks
PolySaken

Draw power from the world, and use it to power machines and tools.

TP Gate
AiTechEye

Teleport through the gate

Nodecore Paint
Kimapr

Paint anything on node surfaces

Tac Nayn
GreenXenith

Adds Nyan Cat's evil twin, Tac Nayn (and a gray-scale rainbow).

Plasterwork
Sokomine

Add colored plaster coats to nodes

Block In Block
TumeniNodes

A silly mod to spark creativity

nodeu
ulla

metal blocks stair railing coloured

3d Random Walk Blocks
chaosomnium

3d Random Walker Blocks that create interesting structures in the world

Visual Bots
Nigel

Visually programmable turtle bots

Smart Renting
AiTechEye

Smart renting: Rent out your locked things and earn money!

Mesecons for Hades Revisited
SFENCE

Adds digital circuitry, including wires, buttons, lights, and even programmable controllers for Hades Revisited.

Batch Screwdriver
niwla23

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

Disable Build Where They Stand
LMD

Disables placing blocks at places where they would collide with a player

Extra Stone Utilities
XxCrisThor1012xX

Adds new uses of stone

Block Exchange
BuckarooBanzai

Cloud worldedit schema exchanger

Poly Decor
PolySaken

My spin on decorative stuff.

Secret
artur99

Adds hidden and secret nodes.

Colored Steel
cd2

Adds colored steel blocks.

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.

Telemosaic
mt-mods

A Minetest mod for user-generated teleportation pads.

DragonEggLock
mi.sh

You can lock a Dragon Egg so it doesnt teleport away

scaffolding (flux's version)
fluxionary

scaffolding, to help in building projects.

Fire Braziers
Excalibur Zero

Fire braziers that cause flames to erupt one node above them that don't fade right away when are near flames or are punched.