CSperson's Simple Pebbles
CSperson

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

Explosion proof obsidian
Miner34

Adds an explosion proof obsidian.

Unified Hammers
Linuxdirk

Various hammers that can be used to crush nodes.

My Mulch
Don

Turns leaves and other items to mulch 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.

New pickaxes
Arkatron

Adds new pickaxes

Element Exchange
enchant97

Exchange nodes into other nodes

Spawn redo
cathaya7d4

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

golden lava
GigaByte

add golden lava

Tile Floors
ClassicAdam

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

Chat Filter
xXNicoXx

Chat Filter: a simple but useful chat filter mod made by xXNicoXx

Finaluxi
Sere Motsatt

A example for aore API.

World Borders
argyle

Add impenetrable barriers to the sides and bottom of the world.

Scripted World Editor
Neuromancer

API that allows you pass in scripting tables to fill a series of shapes of different sizes with different nodes

Brights
_Xenon

Adds bright stuff

Darks
_Xenon

Adds dark stuff

Bouncy Leaves
1F616EMO

Adds bouncy and fall damage reduce effect to leaves

Floof
Momo

Add BicBiomeCraft inspired biomes, tools, and items.

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

shhh it's here.

Macro Crafting Manager
sorcerykid

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

Beamer
Clyde

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

Metatool
SX

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

Quarry Link
gabriel1379

Enables use of Quarry Mechanics with the stone-like and resource-nodes of other mods.

Auctions
Athozus

Adds ingame auctions

Chat History
sorcerykid

Interactive chat history viewer with a variety of message filtering options

Free Stuff Generator
AiTechEye

junk has never been so coveted!

Debugging Console
sorcerykid

Provides an in-game HUD to easily monitor debug output

Burnable Diamonds
Hypernoot

Make diamonds useable as fuel

Ldf Race
lister

Race/Parkour Timers and Record Tables

Kill history hud
GigaByte

adds a death history on the screen

Beautiful Boulders
regulus

Procedurally Generated Rocks with (pretty) Accurate Collision Boxes

Basket Cooking
1F616EMO

Cook all stuffs inside a basket with electric furnaces

Colored Steel
cd2

Adds colored steel blocks.

Great British Pound
angry_hd1

Adds A Simple Currency System

XP Highscores
debiankaios

Add a better highscore system for xp_redo.

Math blocks
Giulio

Adds decorative math blocks to help in teaching

End Him Rightly
ekl

Unscrewable and throwable pommel

Kits
Pyu

An API for creating kits

Minebase Core
ThatCommand

Adds APIs and new dynamic functionalities.

Noriel Sylvire's Minerals Core Modpack
Noriel_Sylvire

An API for automatically registering recipes, nodes and ore generation.