Disable Build Where They Stand
LMD

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

3d Random Walk Blocks
chaosomnium

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

Mid Measure
ANAND

Quickly get the distance between two nodes and calculate their mid-point

Dais Ex Machina
Warr1024

An other-worldly platform to preserve some of your stuff across map resets for NodeCore

Oxidizing Copper
StarNinjas

This mod aims to make copper/bronze more realistic by making them slowly oxidize into a bluish/green block when exposed to water.

Roadway
X17

Adds simple roads in 4 sizes.

Dice
Wuzzy

Decorational dice blocks which face a random direction.

You Can't Touch It Either
Avicennia_g

Simple mod adding lockable storage shelves to Nodecore.

Snow for Hades Revisited
SFENCE

Add snow to Hades Revisited via snow cannon.

Global Bulletin Boards
FaceDeer

Allows creation of global bulletin boards where players can post public messages

Protector Redux
sorcerykid

An efficient and flexible node-based protection scheme for multiplayer worlds

Hidden Doors
Hamlet

Adds various wood, stone, etc.

Real Elevators
Andrey01

Adds realistic elevators with smooth moving.

Mining Game
chaosomnium

A simple base game where you mine mud for ores probabilistically in space.

Columnia
Glünggi

Adds simple pillars and columns

More Snow
Sokomine

snow and wool for stairs - nicer winter landscape and snow-covered roofs