Rainbow Source
Shara

Adds coloured water.

Ice Machine
cheapie

A machine that makes ice cubes.

Dragonbone Stuff
Robot10&Scheletor

Adds dragonbone set

Jukebox
LNJ

A mod that adds a jukebox with nine different discs.

Aqua Farming
Clyde

Farming under Water, now it's possible.

Climbing Pick
lag01

Tool to climb, double jump, and do good damage to mobs.

BitChange
Krock

Money items for your world. You can mine bitcoins. Sort of.

Shadow Realm
archfan7411

The realm of shadows contains many hidden horrors.

X-Fangs
Knightech86

This adds sund powerful suits

Irrigation
monk

Makes dry soil wet for farming

Handmill
Nordal

Adds handmills and threshing floor.

Alien Tools
chaosomnium

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

Raids
DragonWrangler

Allows server owners or server admin to start mob raids to attack settlements or players

X Clay
SaKeL

Adds hardened clay.

Mining Rework
JevFungus

Changes ore generation to be "nicer". More ore, in bigger clusters, much higher up. (mese blocks start at y = -100).

Moonflower
TenPlus1

Moon Flower, when touched by the moon, it opens up a casting light.

Coconut Trees
Neuromancer

Adds coconut trees with edible coconuts & thatch blocks

Generic moon of Saturn
Red_King_Cyclops

Replaces the default earthlike setting with a generic moon of Saturn.

Fake Fire
Semmett9

Fake fire adds in a block that looks like fire, but dose not have the risk of burning down your creations.

My Numbers
Don

Numbers and math signs

New Biomes
Arkatron

If you like underground biomes, this thing is for you.

Locked Travelnet
Sokomine

Protect travelnet stations with locks and/or passwords

Mob Limiter
Neuromancer

removes mobs over max count near players with configurable settings

Pineapple
Neuromancer

Pineapple crop for tropical biomes

Better Ice
TheFanne

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

sfinv++
swagtoy

Improves the inventory, and fixes some formspecs throughout some mods.

GetName
kevins

Adds an API and tool to generate random names for NPCs, mobs, and places.

Castle Storage
FaceDeer

Contains storage containers one might find contained in a castle.

ColoredCement
Truemmerer

Add Cement Blocks with unifieddyes support

3D Armor Mobile
LandarVargan

Adds a command to bring up a formspec that allows mobile users to put on armor

Engravings
Taren

Adds multiple engraved blocks and benches to make them.

Cloudcraft
EmptyStar

Adds tangible clouds and cloud-related items to Luanti worlds

Quartz Geodes
AwesomeDragon97

Extends the Geodes mod with quartz geodes.

Easy ores
X-DE

Minetest ores now generate higher up

Ancient Ice Stuff
Robot10&Scheletor

Adds a new powerful ore to the game

S Battlehammer
Stakbox

Adds a battlehammer weapon with high knockback for MTG (compatible only with Mobs Redo API).

Bunker Block
Spooks

Add blast proof concrete and its craft items.

Archaeology
SkyBuilder1717

Adds an looting and API in archaeologing

Prefab Redo
cheapie

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

Stained Glass
andersje

Adds various stained glass blocks, originally by doyousketch2