Global Bulletin Boards
FaceDeer

Allows creation of global bulletin boards where players can post public messages

Weapons API
Stix

Adds an API to easily register custom weapons

Textmod
NovaX

Adds a /text command to spawn floating colored text in the world. Idea by nono.

Place Rotated
12Me21

Better slab/log placement

My Item Chest
Don

A chest that spawns different items

Hide Coordinates
rudzik8

Hides coordinates for all players who don't have the "debug" privelege

Archaeology
SkyBuilder1717

Adds an looting and API in archaeologing

PerfHUD
Juri

Adds an HUD which shows some performance stats.

Matrix Chat
joenas

This mod creates a bridge between a Matrix channel and the in-game chat!

typeof
TPH

Provides functionality similar to Luau's "typeof" function

NodeCore Sharks
GreenXenith

Hammerhead "sharks" for NodeCore

Refill
1F616EMO

Refill your hand slot after using up all items in that slot

Smart Renting
AiTechEye

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

Lava Particles
karlexceed

Adds some spark particles to lava pools

Tac Nayn
GreenXenith

Adds Nyan Cat's evil twin, Tac Nayn (and a gray-scale rainbow).

My White Block
Don

a white block

Quartz Glass for Stellua
vejou

Adds quartz-glass combinations for colored glass blocks

Grass Slabs and Stairs
erov

Adds grass slabs for smoother terrain

Bugbug Chat Logger
bugbug11

Logs chat messages in worlds/worldname/chat.txt

Aliases
Flay Krunegan

Change playername in the server.

Mines
ApolloX

Regenerating terrain

Archipelago for Piranesi
Warr1024

Connect Piranesi Restoration Project to Archipelago Multi-world Randomizer

Think Block
Thebinoman

This block can think random thoughts.

One death
SFENCE

This allows players to die only once. The world can be destroyed after it (default for single-player) or the player can lose privileges to interact with the world and others (default for multi-player)

Beautiful Boulders
regulus

Procedurally Generated Rocks with (pretty) Accurate Collision Boxes

Diamond Arts
Teltalila

Adds decorational fake diamond blocks.

NodeCore Fossil
Winter94

Discover fossils, oil, natural gas, amber, and more!

Playerhealth
Simon

fill your hearts (HP)

flinv
Luke

API to add new inventory tabs which work across different inventory mods

ColorBrewer palettes for cartography
pauldpickell

8-bit ColorBrewer palettes texture pack

Realm Lamp
GenesisMT

A rainbow gradient block for decoration and with differents speeds.

Classic Mese
Mathias

Classic version of mese used to craft or find during mining expeditions.

NC Reactor Meltdown
Winter94

A new challenge, with serious implications...

Assets_Warehousepart2
JALdMIC

Part 2 of Assets_Warehouse

Journal
theFox

Do you want to add story to your game? Make your protagonist write notes into his Journal.

Grenades API
LandarVargan

Adds an API for easily creating grenades

Vote Day
niwla23

This adds a command to vote for making day!

TransCryptor
Flay Krunegan

Text to Binary, Binary to Text, Text to Morse, Morse to Text, Binary to Morse, Morse to Binary.

Tasks Framework
AntumDeluge

Framework for adding tasks & quests.

Advance ore API
Sere Motsatt

Create complex minerals the easy way