Leather Armor
X17

Adds an armor made of leather

Ancient Runes
spixi

Ancient Runes

Cave explorer tool
SFENCE

Cave explorer tool to use acoustic signals for undergound exploring.

Boots of Swiftness Mod
ClothierEdward

Adds a new pair of boots called the Boots of Swiftness.

Technic Grass Clean
1F616EMO

A tool like chainsaw, but cut grass, not tree.

Grimoire
monk

Override tool functionality during runtime

Ubertool Mod
HartRend

Provides a combination pick, shovel, and axe tool capable of extreme function. Tool is also illuminated.

Multitool Mod
thediamondlego

Adds a new tool that does the job of all the other tools(except hoe and screwdriver). Also has bouble the durability of a diamond tool!

Brights
_Xenon

Adds bright stuff

Darks
_Xenon

Adds dark stuff

Obdy
Sires

Adds some pretty OP tools :)

Trucraft
mt-mods

An alternative crafting system done entirely in the world.

Batch Screwdriver
niwla23

With this you can rotate all nodes in a row at once

Noriel Sylvire's Minerals Core Modpack
Noriel_Sylvire

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

Strong Wooden Pickaxe
mufigilang

Add strong wooden pickaxe that destroy stone as fast as diamond pickaxe

Nextgen Compass
StarNinjas

A compass item which points towards the world origin.

Ocular Networks
mt-mods

Draw power from the world, and use it to power machines and tools.

New pickaxes
Arkatron

Adds new pickaxes

Scraps
Goops

Allows to recycle metal tools

Metatool
SX

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

Banshee
ElCeejo

Adds Banshees, a ghostly mob that haunts pine forests

Portal gun
AiTechEye

Portals and stuff

Balrog Sword MT 5.4
DragonWrangler

allows those using the old mobs balrog mod to have balrog swords

Throwable Bombs
DragonWrangler

adds a cave expansion tool, a throwable tnt stick, a throwable smoke bomb, and a mob throws tnt

Lakemaker Mod
sunnysideup

A TNT block that makes lakes/bodies of water.

Silver
Jackknife

adds silver ore and tools

Stair Pick
BrandonReese

This is a specialized pick for making stairs.

Too many ores
TeufloV

This adds 53 new ores. But most of them are useless.