A next-generation inventory
A powerful modpack
Counts the number of nodes a specific tool has dug
Multiple Biome Generator
230 Pseudorandomly Generated Biomes, Trees, Fruits, Ores, Tools, and Liquids
Adds various projectile weapons which work based off of MT 5.3.0's new collision info provided to objects' on_step functions.
Adds an easy tool repair craft
Allows players to enhance their tools through mese infusion
Draw power from the world, and use it to power machines and tools.
Adds Adamant, a new metal ore, deep underground/
An alternative crafting system done entirely in the world.
Adds bright stuff
All the functionality of tinkers construct, but all in your inventory.
Adds dark stuff
Utilities for Underch - extension pack
Extend the Underground Challenge by miscelaneous utilities and change some recipes
Base Gameplay Modpack
This combines several other gameplay mods that I consider useful.