Scripted World Editor
Neuromancer

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

Brights
_Xenon

Adds bright stuff

Darks
_Xenon

Adds dark stuff

Bouncy Leaves
1F616EMO

Adds bouncy and fall damage reduce effect to leaves

Floof
Momo

Add BicBiomeCraft inspired biomes, tools, and items.

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

shhh it's here.

Macro Crafting Manager
sorcerykid

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

Metatool
SX

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

Quarry Link
gabriel1379

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

Auctions
Athozus

Adds ingame auctions

Chat History
sorcerykid

Interactive chat history viewer with a variety of message filtering options

Free Stuff Generator
AiTechEye

junk has never been so coveted!

Debugging Console
sorcerykid

Provides an in-game HUD to easily monitor debug output

Burnable Diamonds
Hypernoot

Make diamonds useable as fuel

A simple relay bridge
jolethen

Mirrors in game chat to discord

Great British Pound
angry_hd1

Adds A Simple Currency System

XP Highscores
debiankaios

Add a better highscore system for xp_redo.

Math blocks
Giulio

Adds decorative math blocks to help in teaching

End Him Rightly
ekl

Unscrewable and throwable pommel

Kits
Pyu

An API for creating kits

Spectator Mode
jp

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

Minebase Core
ThatCommand

Adds APIs and new dynamic functionalities.

Noriel Sylvire's Minerals Core Modpack
Noriel_Sylvire

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

Server Essentials
jolethen

An essential mod for any server

Protector Redux
sorcerykid

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

Shortcut
Derevio

Adds the ability to set shortcuts to commands.

Grimoire
monk

Override tool functionality during runtime

Purple ore
X-DE

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

Bounty
csirolli

Place bounties on players

treasures
ademant

Treasure nodes with useful items

Lock Workshop
LRV

This mod removes the crafts for locked and shared nodes and makes them craftable in the lock workshop via their unlocked/locked counterpart and a lock.

Serverguide
AiTechEye

The serverguide

Vehicle Mash
Panquesito7

Adds many types of vehicles: cars, boats, hovercrafts and more.

Warning: Non-free media.

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)

Smart Renting
AiTechEye

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

Staff Channel
_Xenon

Write messages only to staff

Trophies
sorcerykid

Showcase player achievements with a personalized gold cup

Banshee
ElCeejo

Adds Banshees, a ghostly mob that haunts pine forests

Invisible Blocks
Truemmerer

Add invisible Blocks

ping
GigaByte

show your ping