scaffolding (flux's version)
fluxionary

scaffolding, to help in building projects.

Nodrown
Minisleep

Disables drowning, so you can swim and live underwater forever.

Build Easy Box
epCode

A handy tool allowing the creation of large structures with minimal effort (in survival!).

Disable Build Where They Stand
LMD

Disables placing blocks at places where they would collide with a player

vexcazer
AiTechEye

Ultimate build+mine & admin tool

Extended Placement
gamefreq0

Allows placing nodes below/behind the closest node to where you are looking, when you're looking at the air where said node would go.

Staffs
CalebJ

Staffs with various uses

ExplorerTools All (Tools place item on right click)
Kilarin

Tools place item in next inventory slot on right click

WorldEdit Undo
Hybrid Dog

Undo and Redo executed WorldEdit chat commands

worldedit terraform command
Mjokfox

a terraform command for worldedit

Colored Chests
SkyBuilder1717

Adds a colored chests!

Hopper Compatibility
Bob64

Adds hopper compatibility for other mods like technic, elepower and even connected chests!

Sane Tools
42tpac

Adds a 3x3 hammer, a one layer wand builder and a one layer scraper

Invsaw
mt-mods

adds a circular saw feature and button to the unified_inventory

Simple streetlight spawner
mt-mods

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

More Snow
Sokomine

snow and wool for stairs - nicer winter landscape and snow-covered roofs

BridgeTool
Kilarin

Adds a new "bridge tool" that makes placing stone (or glass, earth, or any material) while building a bridge in no-fly mode easy.

Pick And Place
BuckarooBanzai

Pick and place utility

Worldedit Big Schematics Handling
IRI

World Edit commands allowing to create and place large schematics, as well as maintain a command journal for undoing past actions.

Aquamarine
RasPiManiac

Adds Aquamarine ore, ingots, etc.

More Ladders
SkyBuilder1717

Adds more ladders and sticks!!!

Lua Controller Block
LC Creations

Adds a block that functions like a Lua Controller but has 'e' (down) and 'f' (up) pins and ports

Digibuilder
BuckarooBanzai

Build nodes with digiline commands

Automatic Cave Lighting
Hybrid Dog

Add two chatcommands to automatically light up dark places (e.g. caves) with lighting nodes such as torches.

Knapping Mechanics
csirolli

Adds knapping mechanics API inspired by Vintage story

Falling Dirt
karlexceed

Makes dirt nodes fall just like sand and gravel.

WorldEdit Wall Block
SkyBuilder1717

Adds block and item for making big structures easily as possible.

Floating Anchor
Starbeamrainbowlabs

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

Fake Liquid
SkyBuilder1717

Adds a fake liquids

Instant Sapling Growth
Panquesito7

Instantly grows sapling and trees when placed. 🌳

Dirt Tunneler
Neuromancer

Makes dirt deeper and you can tunnel through it just by walking through it. Press spacebar/shift to tunnel upward/downward with auto placed ladders.

Simple Tape Measure
OgelGames

Adds a simple tape measure.

Technic use Battery
1F616EMO

Use energy from RE batteries in the inventory

flux's worldedit maze generator
fluxionary

a command to create 2d mazes using worldedit.

Lategame Amulets
Comet

Mine rare ore. Make amulets. Get tons of steel blocks. Build megastructures.

EZ Voxel Builder
MAIgtoS

Allows player to easily place, remove, copy and paste nodes (blocks) in bulk.

Drawstruct
Xenon

Draw or generate random structures

Archaeology
SkyBuilder1717

Adds an looting and API in archaeologing

Stack Slabs
TumeniNodes

stackable slabs for Minetest

Chromakey
SkyBuilder1717

Adds an chroma blocks for videos or photoshop.