World Borders
argyle

Add impenetrable barriers to the sides and bottom of the 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.

Bouncy Leaves
1F616EMO

Adds bouncy and fall damage reduce effect to leaves

Sugar
X17

Adds eatable sugar made of papyrus and a sugar block

Surprise Blocks
Wuzzy

Randomly spawns surprise blocks closely about ground level.

Colored Leaves
Otto

Adds several colors of leaves

Top players
GigaByte

Adds a kill, deaths, and kd counter to players.

Hbdrunk
UnchainedDevelopment

Adds intoxication effects and HUD bar to display intoxication level.

Random (Useful) stuff
pl608

A library that adds well... Random Stuff

Death Coords
Niden

Show Death Coordinates

TP Gate
AiTechEye

Teleport through the gate

Quarry Link
gabriel1379

Enables use of Quarry Mechanics with the stone-like and resource-nodes of other mods.

Math blocks
Giulio

Adds decorative math blocks to help in teaching

Stairs Recycle
DumbDave961

Turn stairs into ingots, slabs, or different stairs. Smelt cobble stairs into stone stairs. Highly recommended for Oneblock survival. Based on Simple Recycle by Jolesh.

Spawn redo
cathaya7d4

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

Phonics Library
Neuromancer

Provides a library for creating Phonics (Learn how to read) mods in different languages.

Scripted World Editor
Neuromancer

API that allows you pass in scripting tables to fill a series of shapes of different sizes with different nodes

Weedstone Random Mod Thing
chaosomnium

Originally meant to be a simple electronics type mod inspired by redstones, I messed around with the code after getting bored and got this weird mod, and now it's this thing. Enjoy I guess?

Protector Redux
sorcerykid

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

Assets_Warehousepart2
JALdMIC

Part 2 of Assets_Warehouse

Discrete Player API
Hypernoot

A library for games which attaches players to node grid

Purple ore
X-DE

Adds new purple ore to floating islands and caves from height 200 to 31000.

Element Exchange
enchant97

Exchange nodes into other nodes

Spectator Mode
jp

A mod for Minetest allowing you to watch other players in their 3rd person view.

Prop Hunt Modpack
Jo5629_

Transform into nodes and with a minigame.

Trucraft
mt-mods

An alternative crafting system done entirely in the world.

Great British Pound
angry_hd1

Adds A Simple Currency System

Simple Dice
farfadet46

Simple dice for little games ;)

Explosion proof obsidian
Miner34

Adds an explosion proof obsidian.

New pickaxes
Arkatron

Adds new pickaxes

Time Stone
j45

This mod adds 2 single use stones, a day stone and a night stone, the day stone turns time to sunrise and the night stone turns time to sunset.

Tac Nayn
GreenXenith

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

Ldf Race
lister

Race/Parkour Timers and Record Tables

Safe TNT
1F616EMO

Apply height restrictions to TNTs

Minebase Core
ThatCommand

Adds APIs and new dynamic functionalities.

Drawstruct
Xenon

Draw or generate random structures

More Coral
Nathan.S

Adds coral in more colors.

Blood Bane Sword
Blocky Player

OP sword for moderators. In memory of an old teacher, who had a mod similar to this on a private server.

Macro Crafting Manager
sorcerykid

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

Online Shopping
LC Creations

Allows players to buy and trade anywhere.