My Mulch
Don

Turns leaves and other items to mulch blocks

3D Spikes
BryanGruik15

Adds spikes to the game.

bridgemaker
mike.monkeybiter

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

Atium
GenesisMT

A strange a ore with tools.

Regenerative Ores
Pixelated

Adds regenerative ores to the game, allowing players to mine and gather resources without depleting them. Specifically for FFA Skywars games.

Claymore
Giga_M

adds a powerful sword capable of deforming the ground

ObsidianStuff
SoloSniper

Adds obsidian tools and armour

Macro Crafting Manager
sorcerykid

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

plots
bookgirl

plot world system inspired by PlotSquared for Luanti

Renewable Fireflies
mecha_moonboy

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

playervault
bookgirl

A personal and admin-accessible player vault.

Respawn Kit
Deadlock

Adds a "respawn-kit"-Chest. A Copy of everything you put in it, will be given to you on respawn. (With configurable Black/White-List)

Mycorners
Don

Put decorative corners on blocks.

Library Mount
Panquesito7

API Framework for mounting objects.

Item Holders
Jose_ManuelS18

Adds 'Item Holders', blocks that hold your items in display, also provides a API.

trudged
Bas080

A simple mod that converts walked-over soil nodes to dirt.

Waste
Jolesh

Adds Waste and ways to recycle it into useful resources

Top players
Giga_M

Adds a kill, deaths, and kd counter to players.

Blood Bane Sword
Blocky Player

OP sword for moderators. In memory of an old teacher, who had a mod similar to this on a private server.

Jukebox
LNJ

A mod that adds a jukebox with nine different discs.

Technic Grass Clean
1F616EMO

A tool like chainsaw, but cut grass, not tree.

obsidian
Giga_M

more uses for obsidian

Item exchange shop
Krock

Provides a simple exchange shop (currency compatible)

My Land
Don

Claim your land and protect it

More Coral
Nathan.S

Adds coral in more colors.

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.

Subway Tracksides
GWLT

Add tracksides for your subway map.

Surprise Blocks
Wuzzy

Randomly spawns surprise blocks closely about ground level.

Noriel Sylvire's Minerals Core Modpack
Noriel_Sylvire

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

TNTTag
debiankaios

A player is holding TNT which is about to explode; they must tag other players to get rid of it

Ocular Networks
mt-mods

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

Scripted World Editor
Neuromancer

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

Strong Wooden Pickaxe
mufigilang

Add strong wooden pickaxe that destroy stone as fast as diamond pickaxe

Colored Leaves
Otto

Adds several colors of leaves

Technic Transporter
Fruitsnack

Mod that adds a technic-powered HV transporter

Kits
Pyu

An API for creating kits

itemshelf (Fork)
nac

Generic item shelf with 3D items on display

Tdl`s Staffs
tdldaboi

Adds elemental staves to the game.

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.

Renewable Desert Stone
Emandac

A crafting recipe to craft desert stone.