Uncrafter
JoeEnderman

Adds an uncrafting table

Coins
Clyde

Adds 3 kind of Coins to your game

My Rocks
Don

Places rocks around the world

Renewable Fireflies
mecha_moonboy

Registers an ABM on some ground blocks that spawn fireflies if certain criteria are met.

Library Mount
Panquesito7

API Framework for mounting objects.

Roadway
X17

Adds simple roads in 4 sizes.

Spectator Mode
jp

Allows you to watch other players in their 3rd person view.

nodeu
ulla

metal blocks stair railing coloured

Dyed Water
erov

Dyed water for mtg

Technic Transporter
Fruitsnack

Mod that adds a technic-powered HV transporter

S Potions
Stakbox

Adds a simple potion brewing system for MTG. Includes API for adding custom potions.

Stardust
alerikaisattera

A mineral found at high altitude and items made with it

Movement Essentials
Daniel

Adds umbrella for slow fall (hang gliders), consume mese crystal to recall (return to spawn), and throw fragments to teleport.

obsidian
Giga_M

more uses for obsidian

rtp
bookgirl

Random teleport commands (/rtp and /wild)

Sneeker
AntumDeluge

An explosive nuisance.

Raids
DragonWrangler

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

Minercantile
Mathias

Economy featuring a primitive supply and demand system for exchanging goods.

Tinted Glass
1F616EMO

Colored glass

Online Shopping
LC Creations

Allows players to buy and trade anywhere.

Realm Lamp
GenesisMT

A rainbow gradient block for decoration and with differents speeds.

Surprise Blocks
Wuzzy

Randomly spawns surprise blocks closely about ground level.

Quartz New
alerikaisattera

Quartz and quartz glass building blocks

Offline Phantoms
Kimapr

Players leave "phantoms" when leaving; other players can take items from those

Death Coords
Niden

Show Death Coordinates

Giftbox2
Wuzzy

Gift boxes that players can give to other who will then receive random items

Mycorners
Don

Put decorative corners on blocks.

Colored Stone
Clyde

provides colored stones.

Ores Expansion
Groin

Adds a new ore ( for now ) called "Rozeemerald".

Shield Tome
DarkXWolf17

Magic Shield Tome.

Tac Nayn
GreenXenith

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

Unstable Caves
M BLOC

Some stones may cave in if punched, making underground expeditions more risky.

Archaeology
SkyBuilder1717

Adds an looting and API in archaeologing

Technic Recycle
DumbDave961

Recycling recipes for Technic items.

Player Speed
Boot

Displays the player's speed (walking, running, falling) in m/s and km/h in the HUD.

CSperson's Simple Pebbles
CSperson

A very simple mod that adds natural detritus. Doesn't do much besides that.

Hardcorebrix
drkwv

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

New Biomes
Arkatron

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

morebiomes
mzs.112000

A simple mod adding a few biomes to Minetest Game

MathPlot
kyleclaassen

A tool for constructing mathematical curves/surfaces/solids.