Periodic Elements
ResendeTech

Adds the periodic elements

Falling Dirt
karlexceed

Makes dirt nodes fall just like sand and gravel.

debuggery
fluxionary

debugging tools for server admins

UFO wreck
Irremann

UFO wreck

Areas Interlocking Patch
wsor4035

make advtrains interlocking priv respect areas

Multiplant
Firefall

Grow Multiplants and get a random seed or flower!

Meseport
ForbiddenJ

Allows for the creation of Meseportation systems.

Utilities for Underch - extension pack
Hypernoot

Extend the Underground Challenge by miscelaneous utilities and change some recipes

Hedges
Shara

Adds connected hedges that that can be crafted from leaves.

Hard Trees
octacian

Require tools to break trees and introduce beginner-tier rock tools.

Epic
BuckarooBanzai

Enhanced Programmer for Ingame Control

Random Cool
pl608

Adds random ores on lava cool

Debug
LMD

Debugging on steroids

Chess
DarkXWolf17

Chess. No rules as of now, only pieces and a board.

gooey mess reborn
timm

a funny addon that is bigger,better, and a lot more of a goofy time

AFK Kick
GunshipPenguin

Kick players who do not move for a while

Item Extensions
Sumi

Support for more callbacks for items, such as `on_step` and `on_select`

Tsalagi_letters_modpack
yona

Tsalagi Letters

Lua Wand
IlzumiZeminori

Tool with programmable on_use

Chocolatestuff
lazerbeak12345

Adds edible chocolate tools and armor.

Coconut Trees
AwesomeDragon97

Adds coconut trees that appear on beaches

Greenscreen
ROllerozxa

Brightly coloured nodes for chroma-keying. (greenscreens)

Inspector
sofar

An in-game tool to inspect node parameters and metadata.

PVP Toggle
Impulse

Enables you to choose whether you want to PVP or not.

Watershed
paramat

A river / mountain range mapgen

Xiangqi
y5nw

Xiangqi (Chinese chess)

Pkarcs for Hades Revisited
SFENCE

Adds arched doors to Hades Revisited.

Craft Lookup
ForbiddenJ

Provides you with a way to lookup recipes to make items.

BiomeDB
EmptyStar

Searchable biome database for robust biome selection

No Map
DarkXWolf17

Reject tradition, embrace modernity. For those tired of default MTG maps. Crafting recipes for TechAge hackers available.

Medieval (Fork)
DragonWrangler

an addon to darkage

Parties
Zughy

Team up with your friends and create a party!

Public Inventory Plus
activivan

Adds a public inventory.

golden_bread
MR_breaddz

golden bread

Colored Chat (Server Side Mod)
1F616EMO

Color Your chat message

Jukeloopbox
ulla

A simple jukebox that can be used for small looped tracks, or simply to listen to music

Aether
iarbat

Adds a hard to obtain yet powerful substance called Aether.

Teacher: Locked Chests
1F616EMO

Tutorial for MTG Locked Chests

X-fangs
Octavian2011

adds suits for speed and look

Nodecore Paint
Kimapr

Paint anything on node surfaces