Cloud Items
Panquesito7

Powerful cloud tools.

Loria (alpha)
siegment

Survival in hardcore acid-alien sci-fi themed world

Technic Plus
mt-mods

Technic fork with focus on features and stability

Water Life
Gundul

new mobs for your river and sea water

Trucraft
PolySaken

An alternative crafting system done entirely in the world.

Draconis
ElCeejo

Adds Dragons and related resources and equipment to Minetest Game

Randomized Map-specific Ores
Piezo_

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

Zero-Effort Custom Minerals
Piezo_

A tool for registering entire materials, complete with ore generation, tool-sets and automatically generated sprites with almost no effort required

Obdy
Sires

Adds some pretty OP tools :)

Melterns
IcyDiamond

Tinkers Construct in Minetest!

Ethereal NG
TenPlus1

Ethereal mod uses the v7 mapgen to add many new biomes to the world.

Caverealms Lite
Shara

A mod for Minetest to add underground realms.

Technic
RealBadAngel

Extensive machinery mod with electricity and ores.