Mesecons
Jeija

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

PaleoTest
ElCeejo

Adds Prehistoric Fauna and Flora to Minetest Game

Gal
ShadMOrdre

A collection of naturally occuring materials, including: sand, clay, dirt, stone, ore, metals, glass, various water types, oil, lava, grease, liquid soils, and decorative stones.

Visual Bots
Nigel

Visually programmable turtle bots

Block Exchange
BuckarooBanzai

Cloud worldedit schema exchanger

PaleoTest for Hades Revisited
SFENCE

Adds Not Only Prehistoric Fauna and Flora to Hades Revisited.