BridgeTool
Kilarin

Adds a new "bridge tool" that makes placing stone (or glass, earth, or any material) while building a bridge in no-fly mode easy.

Better Ice
TheFanne

Modifies ice so that it melts into water when broken, and will be melted by torches

Inventory Admin
Impulse

Enables admins to manage the inventory of players.

The Mob API
TX_Miner

Provides a simple API for mobs

Players Effects
SFENCE

Provides predefined attribute effects for players ncluding movement, vision, and brain concussion effects. Apply logic is not included.

Node View
gtzi203

Lets you see information about the node/entity you are looking at.

Legendary Ore
DynamaxPikachu

Adds legendary ore and blocks

Item Help
Wuzzy

Adds automatically generated help texts for items.

Mailbox
1F616EMO

Inbox for items

Randomized Map-specific Ores
Piezo_

Adds two randomly created ores to each world with varying properties depending on the world's seed

Codihacks
Codiac

Oddball changes and features for Mineclonia

Show bones
ExeterDad

Saves bones positions to a file

Display
SkyBuilder1717

Adds command to display URL images.

My Wood Slopes
Don

Make slopes with wood blocks.

Ethereal: All-faces tree blocks
1F616EMO

All-faces tree block for Ethereal trees

Cracked Castle
pampogokiraly

Nodes to help you making an old broken castle!

Digibuilder
BuckarooBanzai

Build nodes with digiline commands

New Flowers
LLL4001

This brings more flowers to the base game.

Common Mob Interface
Byakuren

A standard modding interface for interacting with mobs

Scripted World Editor
Neuromancer

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

Unified Hammers
Linuxdirk

Various hammers that can be used to crush nodes.

Plastic Box
Starbeamrainbowlabs

Adds a recolourable plastic box. Fork of @cheapie's version with improvements.

No Floating Gravity Blocks
nneett

Registers an abm to not leave falling blocks floating

More posibilities how to kill mobs/players
SFENCE

Add more posibilities how to kill mobs and/or players, like traps, throwable TNT, etc.

Top players
Giga_M

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

NodeCore Force Lode
Warr1024

In-game force-loading anchor for NodeCore.

Researcher Duplication Menu
SevenRichieWhite

Adds a duplication tab for the Researcher mod by EmptyStar using sfinv

Pizzas and cakes - pack 1
MatyasP

add some pizzas and cakes to 'pizzas'

Nebula Admin
JoinNebula

In-game administrator control panel/dashboard/configuration editor

Easter Eggs / Ostereier
Ineva

Adds various coloured eggs for Easter!

Seed of the World
Flay Krunegan

Show the seed of the world

Unstable Caves
M BLOC

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

Sword-axe
Taras Lavrentiev

Adds a tool for quickly chopping trees and cutting leaves simultaneously

Bouncy Mushrooms
AirplaneMan

Adds Bouncy Mushrooms to MT

Color Blocks
mt-mods

Contains colored building blocks.

My Torches HD
Don

Changes default torches to ones that burn out and cause damage

Minercantile
Mathias

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

Nebula Combat
JoinNebula

A combat customizer for competitive servers: customize knockback, attack interval, attack distance, damage multiplier, etc.

Better Bookmarks
jkoop

keep location bookmarks, like /sethome

Underground Survival Lighting
Arkatron

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