Minetest Game
Luanti

The classic "Minetest". A lightweight and well-maintained base for modding

Mineclonia
ryvnf

Survival sandbox game inspired by Minecraft.

i3
mt-mods

A next-generation inventory

Edit
Johannes Fritz

Allows copying, pasting, filling, deleting, replacing and saving 3D areas

Woolen Mesh Creator
entuland

Not only wool! Miniaturizes builds and allows rebuilding them too

Cottages
Sokomine

Build medieval cottages with furniture, window shutters and roofs, thresh your wheat, repair your tools.

Loria (alpha)
siegment

Survival in hardcore acid-alien sci-fi themed world

Holo-Surveilance
RisingLeaf

Observe terrain and players from anywhere.

Cave Game
olive

The simplest block game.

Terraform
x2048

Adds terraforming tools to your creative toolbox

Stapled Bread
Krock

Adds the functionality to staple bread to trees

Pixel ImPerfection
bramaudi

Pixel Im(proved)Perfection aim to be close and familiar to Minecraft texture.

celevator
cheapie

Fully functional realistic elevators

Universal geometry realm
paramat

Create worlds of varying shapes

creative fuel
Oxalis

infinite fuel

Cave Explorer
Hume2

An utility for cave exploring in creative

Extruder Tool
fgaz

Adds an extruder tool that can extend continuous surfaces towards the node face that was clicked

VoxeLibre Furniture and decorations
rudzik8

Adds more decoration and furniture blocks to VoxeLibre (ex. MineClone2) and Mineclonia

WorldEdit Additions
Starbeamrainbowlabs

Extra tools and commands to extend WorldEdit. Currently has over 70 commands!

Railbuilder
rlars

This mod allows you to plan and build tunnels and rails for Advtrains.

Brickbuild
ROllerozxa

A basic studded brick building game for Minetest

Tunnelmaker
kestral

Easily create arbitrarily curved tunnels, paths, and bridges.

Itemshelf
zorman2000

Generic item shelf with 3D items on display

Simple Xray
MikeRedwood

Makes stone and desert stone see through, also works with nether mod

Interior Decor
wsor4035

adds some decor items with limited functionality

Block Exchange
BuckarooBanzai

Cloud worldedit schema exchanger

Map Tools
Calinou

Adds various special versions of normal blocks, tools, and other map maintainer tools.

Cups
Wuzzy

Decorative cups.

Badass Mech (or cool mech)
Soundwavez

An addon that adds a badass mech, or “BAM” (this is a cool mech if the name is in any way confusing).

Cloud Control
ROllerozxa

Control whether clouds are enabled on per-player basis

Researcher
EmptyStar

Research items to unlock duplication

aw_personaje_anthro
JALdMIC

This mod is for try to sponsor the Makehuman and give the player a more realistic model

Pickblock
ROllerozxa

Allows you to put the selected node in an empty slot of your hotbar when you're in creative mode.

Japanese_letters_modpack
ofg

Japanese hiragana blocks

Minetest Classic
sfan5

The classic Minetest-c55 0.3 experience brought back

Dreambuilder Game
mt-mods

Dreambuilder is my attempt to give the player pretty much everything they could ever want to build with, and all the tools they should need to actually get the job done.

More TNT
mittelmaessigercoder2

Adds more TNT

The Build Spawner
Thunder1035

Gives build spawner for spawning builds which makes city creation easy

boomstick
fluxionary

a tool for testing the behavior of tnt

Ephesus
Horka

Added ancient architectural blocks from the Mediterranean