Rainbow Source
Shara

Adds coloured water.

Maple tree
Duvalon

Adds a maple tree placed during world generation.

Tables
AwesomeDragon97

A simple mod that adds decorative wooden tables.

Stack Slabs
TumeniNodes

stackable slabs for Minetest

Brick Walls
philipmi

Adds brick walls from different types of bricks.

Blox
mt-mods

Adds lots of differently colored and textured blocks to Minetest.

Rotting Wood
Polynium

Causes wood to slowly rot while exposed to water

My Slopes
Don

MySlopes

My Fences
Don

Adds nice looking fences.

Better Ice
TheFanne

Modifies ice so that it melts into water when broken, and will be melted by torches

More Ladders
SkyBuilder1717

Adds more ladders and sticks!!!

Tinted Glass
1F616EMO

Colored glass

Archaeology
SkyBuilder1717

Adds an looting and API in archaeologing

My Stone Paths
Don

Stone paths

Useful Contraptions
theFox

Some useful contraptions / machines.

Prefab Redo
cheapie

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

My Siding
Don

Adds lines on one side of block to make it look like siding

Plasterwork
Sokomine

Add colored plaster coats to nodes

Dyeable Steel Blocks
nemokitty9

Allows Players to dye Steel for decorative blocks.

Node roads
MatyasP

Add much of one-node roads and crossroads, road bridges and slopes

Better Roads
DragonWrangler

allows players to make roads with less jagged edges

Glostone Building Blocks
Wovado

Adds basic glostone-based building materials

New Horizons
Hi_World

Adds 4 new biomes and TONS of new blocks!

Poly Decor
mt-mods

My spin on decorative stuff.

More Mese Post Lights!
1F616EMO

Add more mese post light

Pink Lava
TenPlus1

Adds pink lava to certain depth of map with new mahogany obsidian block

Tac Nayn
GreenXenith

Adds Nyan Cat's evil twin, Tac Nayn (and a gray-scale rainbow).

My Ladders
Don

Adds different ladders to Luanti

My Mulch
Don

Turns leaves and other items to mulch blocks

Legendary Ore
DynamaxPikachu

Adds legendary ore and blocks

Tile Floors
ClassicAdam

Various colors of tile flooring in 16px and 256px res

WorldEdit Wall Block
SkyBuilder1717

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

TP Gate
AiTechEye

Teleport through the gate

nodeu
ulla

metal blocks stair railing coloured

Alien Tools
chaosomnium

Alien Tools Mod for Minetest - adds Alien Tool, Shield, biome, etc

Cube Nodes
Andrey01

Adds colorful blocks with various symbols as letters, digits, punctuation, emoji and special signs.

Node houses
MatyasP

Node houses is a mod by MatyasP that adds one-node block of houses, for crafting using items from mode default.

Hardcorebrix
drkwv

Adds durable building materials that won't break on a first dig.

Explosion proof obsidian
Miner34

Adds an explosion proof obsidian.

Flowing Concrete
DumbDave961

Adds flowing concrete that hardens over time. Cheap alternative to lava cooling.