Direction Compass
APercy

Adds a compass

Card deck
mijutu

Deck of cards and table blocks

Dirt Tunneler
Neuromancer

Makes dirt deeper and you can tunnel through it just by walking through it. Press spacebar/shift to tunnel upward/downward with auto placed ladders.

TPH's Notenodes
TPH

Provides musically charged nodes for playing music - unique instruments + options

action queues
fluxionary

provides an API for queuing things for batch processing w/ various ways to specify the batch "size".

Hardcorebrix
drkwv

Adds durable building materials that won't break on a first dig.

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)

Placeholder
BuckarooBanzai

placeholder node / a better unknown node

Show bones
ExeterDad

Saves bones positions to a file

tripwire
Neocraft1293

a mod to add tripwire

resurrection cross
GigaByte

add resurrection cross

Satchel
Avicennia_g

Attempt at adding a formspec-less inventory interface.

NameGen
cronvel

Name generator API.

Trading
ROllerozxa

Trade items with other players.

Entity Control Function Library
Noodlemire

Adds functions to override and unregister entities.

Minercantile
Mathias

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

Aliases
Flay Krunegan

Change playername in the server.

Global Bulletin Boards
FaceDeer

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

Shears
Atlante

This mod adds a pair of shears to easily cut foliage, flowers, wool etc.

Cottonseed Oil Fertilizer
1F616EMO

Powerful fertilizer from cotton seed

Anarglass
VerdiSchubert

Some kinds of glass nodes

Ptracker
Jo5629_

Track a friend or an enemy with this item.

Admin mailing list and report
1F616EMO

Add mailing list for admins and moderators, and a report function

Limited Lives
Xenon

Limits the times players can die.

Blood Bane Sword
Blocky Player

OP sword for moderators. In memory of an old teacher, who had a mod similar to this on a private server.

Atium
GenesisMT

A strange a ore with tools.

Tile Floors
ClassicAdam

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

Example Lua mapgen
ROllerozxa

A basic example for writing custom Lua mapgen using Perlin noise.

Calendar Node
Wuzzy

Adds a placeable calendar

evolving_pickaxe
Neocraft1293

a mod that adds a pickaxe that improves when used

Fire extinguisher
SkyBuilder1717

Adds fire extinguisher, which can extinguish some fire

Nodecore Dye
Crystal Heart

Dyes & painting for Nodecore.

Oil lamps
ademant

Create oillamps with oil from leaves (basic_materials) or create oil with seeds.

Nitro Digger
nri

Adds a tool that removes nodes quickly.

Pineapple
Neuromancer

Pineapple crop for tropical biomes

persistent_monoids
fluxionary

player_monoids that persist between player sessions and server restarts/crashes.

Advanced Keys
Lejo

Replaces the Skeleton Key with one with multiple chests.

Trowel for wall building
Linuxdirk

Vertically modify adjacent nodes of the same type with a single click.

Notices
LandarVargan

Adds chatcommands server staff can use for announcements

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)