Minercantile
Mathias

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

Tile Floors
ClassicAdam

Various colors of tile flooring in 16px and 256px res

My Siding
Don

Adds lines on one side of block to make it look like siding

Architect's planner
MatyasP

Add planning plains for loading the textures (sketches)

Lockout
ApolloX

Late-stage Security for Servers

Subspacewalker
bell07

Go trough walls, rock or lava using Subspace Walker tool

Colored Leaves
Otto

Adds several colors of leaves

Randomized Map-specific Ores
Piezo_

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

Natural Entities
LuantistDork

A lightweight API for spawning random entities

Knives
ApolloX

Adds various knives with extreme damage

rcsv
Wuzzy

RFC-4180-compliant CSV parser and writer

Saphire
Ryft77

Adds saphire stuff

French Toast!
RasPiManiac

Adds French Toast. That's it.

LDF Race And Parkour
lister

Race/Parkour Timers and Record Tables

/bring
1F616EMO

A simple command that brings another user to your spot

status effects
fluxionary

api for defining player status effects

Resistor Anthems
Astrobe

Background music (chiptune/8bit-like)

Archipelago Library
Warr1024

Archipelago multi-world randomizer integration library

Pattern Blocks/festive Blocks
Eternal_plasma

Adds New Bright Blocks

afk_api
fluxionary

an API for registering events which trigger when a player goes AFK or comes back from AFK.

Spectator Mode
jp

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

Names
Zeralyth

Settable Names Mod

NodeCore Coal
Winter94

Adds 3 ores of coal to NodeCore.

TPH's Basic Filesystem
TPH

API for loading files into a basic readable format as well as loading and converting conf files

Advanced Rangefinder
sorcerykid

Extends the API with search capabilities for entities

Disguises
Signal_

Adds a disguise to every entity.

Wonderpick
LandarVargan

Adds a pickaxe that can dig almost any block

Unstable Caves
M BLOC

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

Cave explorer tool
SFENCE

Cave explorer tool to use acoustic signals for undergound exploring.

Vision Lib
mt-mods

Common library for PolySaken's mods.

New bricks
DimonPy

adds 119 new bricks and grinder

Plastic Box
Starbeamrainbowlabs

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

My Wood Slopes
Don

Make slopes with wood blocks.

Translocator
IlzumiZeminori

Teleportation tool inspired by Unreal Tournament 2004

golden lava
Giga_M

add golden lava

Automatic Cave Lighting
Hybrid Dog

Add two chatcommands to automatically light up dark places (e.g. caves) with lighting nodes such as torches.

Hades Endgame
VeproGames

Adds various goodies to Hades Revisited, focused on Late/Endgame

Petroglyph Maker
Neuromancer

Create your own petroglyphs on Desert Stone

Autobox
Just_Visiting

Auto Collision/Selection Loading Boxes

Simple Commands
enchant97

Adds simple chat commands