Alien Tools
chaosomnium

Alien Tools Mod for Minetest - adds Alien Tool, Shield, biome, etc

Extra Stone Utilities
XxCrisThor1012xX

Adds new uses of stone

KSurvive
MadKamel

A game that changes much of MTG's gameplay.

MineClone 5
kay27

A fork of MineClone 2 with no release milestones, rapid delivery, merges by one approval and no MC target version limitations

Scaffolding
Semmett9

Adds wooden and Iron scaffolding.

Wrench - node rotation tool
Argos

A better screwdriver.

Multiple Biome Generator
chaosomnium

230 Pseudorandomly Generated Biomes, Trees, Fruits, Ores, Tools, and Liquids

UwU (MineClone2)
Psyco

Add UwU block, uwu crystal ores, uwu tools and more.

Cloud Items
Panquesito7

Powerful cloud tools.

Loria (alpha)
siegment

Survival in hardcore acid-alien sci-fi themed world

You Can't Touch It Either
Avicennia_g

Simple mod adding lockable storage shelves to Nodecore.

Staffs
CalebJ

Staffs with various uses

Batch Screwdriver
niwla23

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

Torch Bomb
FaceDeer

Place torches throughout your entire surroundings with a torch bomb

Stair Pick
BrandonReese

This is a specialized pick for making stairs.

Obdy
Sires

Adds some pretty OP tools :)

Trash Can
Evergreen

Adds a wooden trash can, and a dumpster to the game.

Better Screwdriver
12Me21

A more intuitive node rotation tool

Portal gun
AiTechEye

Portals and stuff

Ocular Networks
PolySaken

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

Pigiron
TenPlus1

Adds pig iron ingots which need to be crafted to make steel, also blocks and stairs.

Melterns
IcyDiamond

Tinkers Construct in Minetest!

Mesecon Technology (MeseTec)
AiTechEye

Adds some extra and usefull mesecons stuff

Lava Stuff
LandarVargan

Adds lava armor, tools, and blocks

Woolen Mesh Creator
entuland

Not only wool! Miniaturizes builds and allows rebuilding them too

vexcazer
AiTechEye

Ultimate build+mine & admin tool

Floating Anchor
Starbeamrainbowlabs

ExtraUtilities' Angel Block for Minecraft in Minetest! Place structures in mid-air with ease.

Cement
Linuxdirk

A craftable and “makeable“ cement block.

Replacer
Sokomine

Exchange/replace nodes with one click.

Digtron
FaceDeer

Adds components for building modular tunnel boring machines

X-Decor
jp

A decoration mod meant to be simple and well-featured.

Warning: Non-free media.

Useful Contraptions
theFox

Some useful contraptions / machines.

Abriflame
Shara

Adds coloured fire through use of fire starter tool.

Caverealms Lite
Shara

A mod for Minetest to add underground realms.