Time Stone
j45

This mod adds 2 single use stones, a day stone and a night stone, the day stone turns time to sunrise and the night stone turns time to sunset.

My Torches
Don

Changes default torches to ones that burn out and cause damage

Offline Phantoms
Kimapr

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

color_lib
bookgirl

adds HEX colouring

Dementia Mod
tommyaweosme

tries to simulate dementia in luanti

Purple ore
X-DE

Adds new purple ore to floating islands and caves from height 200 to 31000.

Parcdeco
Floatland

adds grass-like nodes that have flowers

Random (Useful) stuff
pl608

A library that adds well... Random Stuff

My Rocks
Don

Places rocks around the world

CSperson's Simple Pebbles
CSperson

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

Archaeology
SkyBuilder1717

Adds an looting and API in archaeologing

doorbell
Miniontoby

A doorbell mod with sound

Throwable Snowball
ComputeGraphics

Adds a throwable Snowball

Tac Nayn
GreenXenith

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

Renewable Desert Stone
Emandac

A crafting recipe to craft desert stone.

Rotting Wood
Polynium

Causes wood to slowly rot while exposed to water

Spawn redo
cathaya7d4

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

Beautiful Boulders
regulus

Procedurally Generated Rocks with (pretty) Accurate Collision Boxes

Metatool
SX

Provides API to register node metadata tools along with few useful tools

Player Speed
Boot

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

Scripted World Editor
Neuromancer

API that allows you pass in scripting tables to fill a series of shapes of different sizes with different nodes

Phonics Library
Neuromancer

Provides a library for creating Phonics (Learn how to read) mods in different languages.

My Stacks
Don

Changes the max number of items in each stack

Assets_Warehousepart2
JALdMIC

Part 2 of Assets_Warehouse

idiamond
soeren

With this new feature, you can press ordinary diamonds into industrial diamonds, effectively doubling your diamond count and maximizing your resources.

chatcolor
bookgirl

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

Cute Pie
Don

Cute blocks

My Blocks
Don

Special Blocks

Colourful Ladders
Itz-Noah

40 colourful wooden ladders

My Torches HD
Don

Changes default torches to ones that burn out and cause damage

Prop Hunt Modpack
Jo5629_

Transform into nodes and with a minigame.

Batmod
Don

Fun mod that is about bats

Debugging Console
sorcerykid

Provides an in-game HUD to easily monitor debug output

Oil lamps
ademant

Create oillamps with oil from leaves (basic_materials) or create oil with seeds.

Ruby Tools+
ReinPlayz

Adds ruby ore, ruby tools, and ruby blocks balanced around diamond-tier gameplay.

Discrete Player API
Hypernoot

A library for games which attaches players to node grid

French Toast!
RasPiManiac

Adds French Toast. That's it.

daymachine
niwla23

Make day by using one mese crystal!

Finaluxi
Sere Motsatt

A example for aore API.

Kill history hud
Giga_M

adds a death history on the screen