My Stacks
Don

Changes the max number of items in each stack

Statues
Groin

Adds statues of various sizes to the game.

Roadway
X17

Adds simple roads in 4 sizes.

Surprise Blocks
Wuzzy

Randomly spawns surprise blocks closely about ground level.

Spawn redo
cathaya7d4

Drop-in replacement for default/spawn for more third-party biomes

Openion Yeast
Wovado

Adds Yeast and a Yeast Barrel

Mycorners
Don

Put decorative corners on blocks.

Beamer
Clyde

Beam items or nodes from your inventory to the inventory of your friend.

Sticks Stones
MikeRedwood

Makes Sticks from leaves and scatters small stones

Snow Cones
GreenXenith

Some simple flavored snow cones.

Splink Storage
Yoreni

Adds items that can store massive amounts of other items in your inventory

My Land
Don

Claim your land and protect it

My Ladders
Don

Adds different ladders to the game

Alternate Gravel
soeren

the mod adds 32x32 pixels 2x alternative gravel

Dementia Mod
tommyaweosme

tries to simulate dementia in luanti

Ubertool Mod
HartRend

Provides a combination pick, shovel, and axe tool capable of extreme function. Tool is also illuminated.

chatcolor
bookgirl

hex and bukkit-style chat colors with per-color privileges

blueberry_juice
MR_breaddz

blueberry juice

Fakery
iarbat

Adds counterfeit diamonds and other fake precious materials.

playervault
bookgirl

A personal and admin-accessible player vault.

Smart Renting
AiTechEye

Smart renting: Rent out your locked things and earn money!

Crafty Arts
AirplaneMan

Arts and crafts supplies

Kits
Pyu

An API for creating kits

Noriel Sylvire's Minerals Core Modpack
Noriel_Sylvire

An API for automatically registering recipes, nodes and ore generation.

Hexagonal
GreenXenith

Proof of concept for hexagonal nodes

French Toast!
RasPiManiac

Adds French Toast. That's it.

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.

Card deck
mijutu

Deck of cards and table blocks

Tile Floors
ClassicAdam

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

Ocular Networks
mt-mods

Draw power from the world, and use it to power machines and tools.

My Mulch
Don

Turns leaves and other items to mulch blocks

Archaeology
SkyBuilder1717

Adds an looting and API in archaeologing

Protector Redux
sorcerykid

An efficient and flexible node-based protection scheme for multiplayer worlds

Cave explorer tool
SFENCE

Cave explorer tool to use acoustic signals for undergound exploring.

Colored Steel
cd2

Adds colored steel blocks.

MathPlot
kyleclaassen

A tool for constructing mathematical curves/surfaces/solids.

Spectator Mode
jp

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

Super Axe
adrian-castravete

An automatically wood chopping axe.

More Coral
Nathan.S

Adds coral in more colors.

Macro Crafting Manager
sorcerykid

Macro Crafting Manager provides a streamlined drag-and-drop interface for dividing and arranging item stacks within the craft-grid