Mesecons
Jeija

Adds digital circuitry, including wires, buttons, lights, and even programmable controllers.

MineClone Placers
opfromthestart

Adds Minecraft-y block placers

MineClone Breakers
opfromthestart

Minecraft-y block breakers

Mesecons lab
BuckarooBanzai

Mesecons laboratory and tutorials

Digibuilder
BuckarooBanzai

Build nodes with digiline commands

Maidroid NG
mazes

Inspired by littleMaidMob from another voxel game, it provides maid robots called "maidroid".

NodeCore ALPHA
Warr1024

Early-access edition of NodeCore with latest features (and maybe bugs)

NodeCore
Warr1024

Minetest's top original voxel game about emergent mechanics and exploration

Signs Bot
joe7575

A robot controlled by signs

Mesecons Stealthnodes
Clyde

Register your own Ghoststones.

Spacecannon
BuckarooBanzai

Adds three scifi/space cannons with various projectile-speed and explosion-strength

Technic Plus Beta
mt-mods

The technic modpack extends the Minetest game with many new elements, mainly constructable machines and tools.

Simple Airship (sum)
Sumianvoice

Adds a simple airship for getting around the floatlands. Also optionally uses air currents.

Pipeworks
mt-mods

Supplies a complete set of nice, round mesh-based water pipes, boxy item-transport tubes, and devices that work with them.