Randomized Map-specific Ores
Piezo_

Adds two randomly created ores to each world with varying properties depending on the world's seed

Magic Tech
Futuray-pgm

It adds technology based magic

Alien Tools
chaosomnium

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

obsidian
GigaByte

more uses for obsidian

Dragonbone Stuff
Robot10&Scheletor

Adds dragonbone set

Technic Grass Clean
1F616EMO

A tool like chainsaw, but cut grass, not tree.

Grimoire
monk

Override tool functionality during runtime

Ancient Runes
spixi

Ancient Runes

Batch Screwdriver
niwla23

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

Scraps
Goops

Allows to recycle metal tools

New pickaxes
Arkatron

Adds new pickaxes

Cave explorer tool
SFENCE

Cave explorer tool to use acoustic signals for undergound exploring.

Livetools
AiTechEye

Craft tools which have a life of their own - they can fight, dig, or place for you

Trucraft
mt-mods

An alternative crafting system done entirely in the world.

Floating Anchor
Starbeamrainbowlabs

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

Multitool Mod
thediamondlego

Adds a new tool that does the job of all the other tools(except hoe and screwdriver). Also has bouble the durability of a diamond tool!

Obdy
Sires

Adds some pretty OP tools :)

No Melterns, no tools
InfiniteCoder01

You can't craft tools without melters now. Progression becomes harder

Ben's Gear
MissingTextureMan101

Attach tool parts to create new tools and add a whole new layer of strategy to your tool crafting!

Darks
_Xenon

Adds dark stuff

Brights
_Xenon

Adds bright stuff

Metatool
SX

Provides API to register node metadata tools along with few useful tools

Noriel Sylvire's Minerals Core Modpack
Noriel_Sylvire

An API for automatically registering recipes, nodes and ore generation.

Ocular Networks
mt-mods

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

Knapping Mechanics
csirolli

Adds knapping mechanics API inspired by Vintage story

Banshee
ElCeejo

Adds Banshees, a ghostly mob that haunts pine forests

Portal gun
AiTechEye

Portals and stuff

Balrog Sword MT 5.4
DragonWrangler

allows those using the old mobs balrog mod to have balrog swords

Throwable Bombs
DragonWrangler

adds a cave expansion tool, a throwable tnt stick, a throwable smoke bomb, and a mob throws tnt

Lakemaker Mod
sunnysideup

A TNT block that makes lakes/bodies of water.

Silver
Jackknife

adds silver ore and tools

Stair Pick
BrandonReese

This is a specialized pick for making stairs.

Too many ores
TeufloV

This adds 53 new ores. But most of them are useless.