Wrench - node rotation tool
Argos

A better screwdriver.

Mystic Runes
liteninglazer

Adds runes which can be used to craft powerful items.

More vector helpers
Hybrid Dog

Adds more vector functions.

Lockout
ApolloX

Late-stage Security for Servers

Cloudcraft
EmptyStar

Adds tangible clouds and cloud-related items to Luanti worlds

Respawn Kit
Deadlock

Adds a "respawn-kit"-Chest. A Copy of everything you put in it, will be given to you on respawn. (With configurable Black/White-List)

My Item Chest
Don

A chest that spawns different items

Phonograph album: Helena Bolan
1F616EMO

Songs composed by Helena Bolan for Phonographs

Privs Per World for Mineclonia
bgstack15

Automatically grant privileges to players in the nether

Make fighting harder by allow damage to be done to attached player (player in cart, on boat, etc)
SFENCE

Limit defensive potencial of some entities, player can be attached to.

Digibuilder
BuckarooBanzai

Build nodes with digiline commands

Angle Grinder
Warr1024

Snap camera to discrete angles

ReSpec
ZenonSeth

Easy and Versatile Formspec Creation based on ConstraintLayout

Giftbox2
Wuzzy

Gift boxes that players can give to other who will then receive random items

Bed Jumping
playduin

You may jump on the bed

Antigrief
sorcerykid

An API for validating node and item placement via a simple callback mechanism.

Mortar
suhaib

Adds a mortar cannon

Phonograph album: 1F616EMO Collection
1F616EMO

Songs from 1F616EMO for phonographs

Smart Chat
Clyde

A new, lightweight, simple and modular Chatsystem

Magic Tech
Futuray

It adds technology based magic

Persistent Effects
epCode

An API for creating persistent effects for any object. eg. damage a player or entity over time. (like poison)

Top players
Giga_M

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

Hitchhiker's Guide to the Galaxy
Paul Wilde

A bunch of nodes that do some things related to Hitchiker's Guide to the Galaxy

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.

Slot Machine Mini-games
mt-mods

Provides an "engine" to drive simple slot machines (includes two). Spins reels, takes in/pays out in Minegeld (Dan's currency mod), etc.

NodeCore ZipRunes
Warr1024

Gameplay-integrated fast-travel system for NodeCore.

Interactive Item API
Jose_ManuelS18

Provides an API to make it easier to implement items' inner workings.

Subway Tracksides
GWLT

Add tracksides for your subway map.

Player Nametags
LMD

Adds player nametags floating above players.

Nextgen Compass
StarNinjas

A compass item which points towards the world origin.

Unstable Caves
M BLOC

Some stones may cave in if punched, making underground expeditions more risky.

Tortou
LibraSubtilis

Turtle graphics, hyperloop travelingsystem and cubic mobs.

Lush
rstcxk

fully featured shell interpreter

Exile Snow Fun
TPH

Adds throwable snowballs to Exile

nodeu
ulla

metal blocks stair railing coloured

Example Lua mapgen
ROllerozxa

A basic example for writing custom Lua mapgen using Perlin noise.

Ediblestuff API
lazerbeak12345

A unified API for making items, tools and armor edible. Eat armor while wearing it!

NodeCore Sharks
GreenXenith

Hammerhead "sharks" for NodeCore

NodeCore Plumbum
Winter94

Plumbum, the best radiation protection the earth can provide!

NodeCore Stalactites & Stalagmites
Winter94

Generates Stalactites and Stalagmites in caverns underground.