Multitools
ChimneySwift

Adds a series of multi-purpose tools

Fbt WiTT
Forburnt

WAILA-like mod (a rewrite of WiTT by MightyAlex200)

Lava Ore Gen
Coder12

Makes the lava turn stone into ore over time.

Mineclone2 Falling Anvils
NO11

A survival challenge for Mineclone2.

Areas' helper tools
rangeTonic

Convenient tools for Areas protection mod

Fancy Place
DragonWrangler

Better block placement system that allows you to place blocks even when not pointing at the connecting face.

eXtended Ban 2
kaeza

Tempbanning and better banning by keeping track of usernames and IP addresses

Flow Inspector
Luke

An "inspect element" helper for flow GUIs

Aqua Farming
Clyde

Farming under Water, now it's possible.

Know Where You Die
1F616EMO

Send a message include death pos to you when you die

Basic Anvil
MikeRedwood

Adds an easy tool repair craft

More Pickaxes
Koda_

Adds additional pickaxes to the game

Craft Lookup
ForbiddenJ

Provides you with a way to lookup recipes to make items.

Swamplified
Neuromancer

This mod adds a few more nice touches to Atlante's Swamp biome mod

Rhotator Screwdriver
entuland

A predictable tool to rotate nodes

Variety Fork
awuuwa

Fork of Atlante's Variety

Luscious
sofar

Bring color into the mgv7 mapgen world.

Mystical Tools
liteninglazer

tool progression past diamonds and adds mystical staffs and wands

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.

Music Player
Jose_ManuelS18

Adds a music player and discs

Gauges
Calinou

Adds health and breath gauges above players.

Sedimentology
sofar

A mod that adds realistic erosion and degradation of rocks.

Simple Tape Measure
OgelGames

Adds a simple tape measure.

Climbable Trapdoors
ZenonSeth

Makes the wood and steel trapdoors climbable

Scaffolding
Semmett9

Adds wooden and Iron scaffolding.

WC Strata
Winter94

Exploring the NodeCore underground has never been more colorful.

Debug
LMD

Debugging on steroids

Tomahawks and Throwing Knives
Pixelated

Introduces new weapons

SkillsFramework
domtron vox

SkillsFramework provides an API for creating and managing skills.

Minetest test framework
BuckarooBanzai

Provides an api to register test functions for integration-tests.

Perlin Explorer
Wuzzy

Developer tool to create previews of Perlin noises

scaffolding (flux's version)
fluxionary

scaffolding, to help in building projects.

replacer (flux's redo)
fluxionary

provides a node replacement tool and a node inspection tool. slightly different than the other replacer variants.

Server Shops
AntumDeluge

Shops intended to be set up by server administrators.

country_lib
Zughy

small util library providing country localised names and flags

Dashing
LMD

Quick energy burst alternative to sprinting

Hard Trees
octacian

Require tools to break trees and introduce beginner-tier rock tools.

Aquamarine
RasPiManiac

Adds Aquamarine ore, ingots, etc.

Nodecore Paint
Kimapr

Paint anything on node surfaces

Copper Armors and Tools
michi16bit

Add Armors and Tools of Copper (and variant)