Invisible Blocks
Truemmerer

Add invisible Blocks

Openion Yeast
Wovado

Adds Yeast and a Yeast Barrel

More Coral
Nathan.S

Adds coral in more colors.

Random (Useful) stuff
pl608

A library that adds well... Random Stuff

Free Stuff Generator
AiTechEye

junk has never been so coveted!

Portal Rail
BigBear

Minecart rail that teleports exactly 500m in direction of travel

Shortcut
Derevio

Adds the ability to set shortcuts to commands.

Glostone Building Blocks
Wovado

Adds basic glostone-based building materials

End Him Rightly
ekl

Unscrewable and throwable pommel

Phonics Library
Neuromancer

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

Livetools
AiTechEye

Craft tools which have a life of their own - they can fight, dig, or place for you

Safe TNT
1F616EMO

Apply height restrictions to TNTs

Sneeker
AntumDeluge

An explosive nuisance.

XP Highscores
debiankaios

Add a better highscore system for xp_redo.

Scraps
Goops

Allows to recycle metal tools

bridgemaker
mike.monkeybiter

A refillable machine to easily create simple block bridges across caverns and valleys.

Finaluxi
Sere Motsatt

A example for aore API.

golden lava
GigaByte

add golden lava

Explosion proof obsidian
Miner34

Adds an explosion proof obsidian.

Roulette Table
LiyahMackenzie

Adds a roulette minigame with a table block, to gamble away your possessions.

Underground Survival Lighting
Arkatron

If you like underground light in survival, use this mod, it can help that.

Obelisk - Obelisk.jar [Inspired by lizardmeninc Obelisk]
colon

shhh it's here.

Card deck
mijutu

Deck of cards and table blocks

LWComponents Spawners
mt-mods

Register spawners for lwcomponents.

Kill history hud
GigaByte

adds a death history on the screen

My Mulch
Don

Turns leaves and other items to mulch blocks

Item exchange shop
Krock

Provides a simple exchange shop (currency compatible)

Roadway
X17

Adds simple roads in 4 sizes.

idiamond
soeren

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

TurtleMiner
BirgitLachner

A Mod to let Kids start programming with a turtle that can move around in the world, and dig and build what the user wants.

Subway Tracksides
GWLT

Add tracksides for your subway map.

Kits
Pyu

An API for creating kits

Library Mount
Panquesito7

API Framework for mounting objects.

Quarry Link
gabriel1379

Enables use of Quarry Mechanics with the stone-like and resource-nodes of other mods.

Protector Redux
sorcerykid

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

blueberry_juice
MR_breaddz

blueberry juice

Noriel Sylvire's Minerals Core Modpack
Noriel_Sylvire

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

Ubertool Mod
HartRend

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

Mtg Craft Reverser
Hugues Ross

Makes crafting recipes in Minetest Game reversible

MathPlot
kyleclaassen

A tool for constructing mathematical curves/surfaces/solids.