CSperson's Simple Pebbles
CSperson

A very simple mod that adds natural detritus. Doesn't do much besides that.

Archaeology
SkyBuilder1717

Adds an looting and API in archaeologing

Throwable Snowball
ComputeGraphics

Adds a throwable Snowball

Tac Nayn
GreenXenith

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

Renewable Desert Stone
Emandac

A crafting recipe to craft desert stone.

Spawn redo
cathaya7d4

Drop-in replacement for default/spawn for more third-party biomes

Beautiful Boulders
regulus

Procedurally Generated Rocks with (pretty) Accurate Collision Boxes

Metatool
SX

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

Player Speed
Boot

Displays the player's speed (walking, running, falling) in m/s and km/h in the HUD.

Phonics Library
Neuromancer

Provides a library for creating Phonics (Learn how to read) mods in different languages.

MathPlot
kyleclaassen

A tool for constructing mathematical curves/surfaces/solids.

chatcolor
bookgirl

hex and bukkit-style chat colors with per-color privileges

Colourful Ladders
Itz-Noah

40 colourful wooden ladders

Crafty Arts
AirplaneMan

Arts and crafts supplies

Debugging Console
sorcerykid

Provides an in-game HUD to easily monitor debug output

Oil lamps
ademant

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

Beamer
Clyde

Beam items or nodes from your inventory to the inventory of your friend.

Ruby Tools+
ReinPlayz

Adds ruby ore, ruby tools, and ruby blocks balanced around diamond-tier gameplay.

French Toast!
RasPiManiac

Adds French Toast. That's it.

daymachine
niwla23

Make day by using one mese crystal!

Finaluxi
Sere Motsatt

A example for aore API.

Kill history hud
Giga_M

adds a death history on the screen

Giftbox2
Wuzzy

Gift boxes that players can give to other who will then receive random items

Minebase Core
ThatCommand

Adds APIs and new dynamic functionalities.

Brights
_Xenon

Adds bright stuff

Colored Steel
cd2

Adds colored steel blocks.

golden lava
Giga_M

add golden lava

Grow Dry Grass
Silver Sandstone

Makes dry grass spread on savanna dirt.

Macro Crafting Manager
sorcerykid

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

TP Gate
AiTechEye

Teleport through the gate

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

shhh it's here.

XP Highscores
debiankaios

Add a better highscore system for xp_redo.

Darks
_Xenon

Adds dark stuff

Burnable Diamonds
Hypernoot

Make diamonds useable as fuel

Shortcut
Derevio

Adds the ability to set shortcuts to commands.

Splink Storage
Yoreni

Adds items that can store massive amounts of other items in your inventory

Kits
Pyu

An API for creating kits

treasures
ademant

Treasure nodes with useful items

Trudged
Bas080

A simple mod that converts walked-over soil nodes to dirt.

My White Block
Don

a white block