X Obsidianmese
SaKeL

Shooting sword, woodcutting / treecapitator axe, multiple plow blocks / plant seeds hoe, path creating shovel, pickaxe can place secondary items (e.g. torches) and more...

My Concrete
Don

Myconcrete adds concrete blocks, sidewalks and other items

My Sheet Metal
Don

Gutters, fashia and soffit makes your house look great.

Guns4dWorkbench
Jo5629_

Craft guns and their components with an added workbench.

Chemistry
Emiliano

A package that adds More Ores and Things

Stamina (Fork)
TenPlus1

Adds stamina and hunger (this fork adds drunk effects and player_monoids/pova support)

My Torches
Don

Changes default torches to ones that burn out and cause damage

My Streets
Don

Adds asphalt and other items you need to build streets

Ranged Weapons
Lars

Adds some guns and throwable weapons.

Mypaint
Don

Provides paint brushes and buckets for other mods to use to paint their items.

Mycorners
Don

Put decorative corners on blocks.

My Workshop
Don

Workshop benches

boss_api_gb
GigaByte

add an api to create bosses

Ruined structures
X-DE

Adds ruins to desert, sandstone desert, icesheet, snowy grassland, taiga, rainforest and tundra

My Cobble
Don

This is a simple mod that lets you turn cobble into gravel and gravel into sand

My Mason Hammer
Don

A hammer to make stairs, ladders and footholds

My Lights
Don

Lightbulbs and light fixtures.

My Admin
Don

Admin tools for servers including Admin picks, curse protection, chat commands and more.

Mobs Monster
TenPlus1

Adds many types of monster.

My Mine Shaft
Don

Makes tunnels straight down that you can climb

Amethyst
alerikaisattera

Amethyst, basalt, calcite and related building blocks

Unstable Caves
M BLOC

Some stones may cave in if punched, making underground expeditions more risky.

My Sponge
Don

A sponge that soaks up water

My Mesh Nodes
Don

A machine that makes different shape node

My Default Lights
Don

Simple lights made from default material

My Treasure
Don

Adds treasure chests around the world

Dungeon loot chests
X-DE

Adds loot chests, a command to prevent spawning loot in the chest so you can save a schematic with a loot chest, adds 2 functions to create loot in other chests

Ethereal NG
TenPlus1

Adds many new biomes, items and mechanics into the world.