Technic
RealBadAngel

Extensive machinery mod with electricity and ores.

Gloop Blocks
mt-mods

Adds decorative and functional blocks, including cement, rainbow blocks, "evil" blocks, and tools.

Prefab Redo
cheapie

Cheapie's version of Dan's old prefab mod, which adds pre-fabricated concrete elements: catwalks, benches, ladders, railings...

Slot Machine Mini-games
mt-mods

Provides an "engine" to drive simple slot machines (includes two). Spins reels, takes in/pays out in Minegeld (Dan's currency mod), etc.

Simple streetlight spawner
mt-mods

Adds various streetlight "spawners" (5m tall, supports multiple pole materials and light sources)

Plantlife
mt-mods

Adds various kinds of plants, fruit bushes, fallen trees, and a whole host of foliage and other ground cover.

Coloredwood
mt-mods

Colorize some wood!

Minetest 2D
AiTechEye

Transforms the world into 2 dimensions

Working villages
theFox

A mod adding villager NPCs that are doing predefined work.

Electrica
Evil_Gabe

A mod that adds machines and tools also ores, items, etc

Hard Trees
octacian

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

Multitools
ChimneySwift

Adds a series of multi-purpose tools

Better Fences
ChimneySwift

Improves the usability of fences by making fences which connect to less than 2 other fences connect to all nodes.

Stack Slabs
TumeniNodes

Stackable slabs

Alive AI
AiTechEye

Advanced survivor ai mobs (npc, monsters and more)

Ocular Networks
mt-mods

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

Floating Anchor
Starbeamrainbowlabs

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

Extra Doors
sorcerykid

Extra Doors provides a range of interior and exterior doors for builders

Useful Contraptions
theFox

Some useful contraptions / machines.

Timber Frame
jbb

This mod adds timber-framed clay, bricks, cobble, stone and stone bricks to the game.

Castle Tapestries
FaceDeer

This is a mod for creating medieval tapestries, as found in castles

vexcazer
AiTechEye

Ultimate build+mine & admin tool