Molten Sailor by Dokimi
CalebJ

Boat for sailing on lava, suit for diving in lava.

Crowbars
A Boulanger

Adds two crowbars as unbreakable multitools.

Mining Rework
JevFungus

Changes ore generation to be "nicer". More ore, in bigger clusters, much higher up. (mese blocks start at y = -100).

X Clay
SaKeL

Adds hardened clay.

GC Gamemode
stellarorion

Easily switch between the survival and creative inventory

Lapis Lazuli
LNJ

Adds lapis lazuli ore, items and blocks.

Falls
Just_Visiting

A Particle-based Waterfalls/Lavafalls Mod

Better Ice
TheFanne

Modifies ice so that it melts into water when broken, and will be melted by torches

ColoredCement
Truemmerer

Add Cement Blocks with unifieddyes support

Mine
SkyBuilder1717

Adds many types of mines

Movement Essentials
Daniel

Adds umbrella for slow fall (hang gliders), consume mese crystal to recall (return to spawn), and throw fragments to teleport.

After Earth
AiTechEye

The earth's ecosystem has collapsed, and there are no biologically environment left.

S Potions
Stakbox

Adds a simple potion brewing system for MTG. Includes API for adding custom potions.

Better Locks
SkyBuilder1717

Adds locks and locked doors

Cthulhu eye boss
GigaByte

Cthulhu eye boss adds

Strange Weapons
Robot10&Scheletor

Adds many strange and improbable weapons

Lighting Rocket
lag01

For temporary lighting large areas

Avanti Savoia!
JetpackJackson

Adds WW1 stuff, I guess?

Soup
justsoup

A mod that adds a few new food items.

Cottonseed Oil Fertilizer
1F616EMO

Powerful fertilizer from cotton seed

Hbdrunk
UnchainedDevelopment

Adds intoxication effects and HUD bar to display intoxication level.

Fire extinguisher
SkyBuilder1717

Adds fire extinguisher, which can extinguish some fire

Dragonbone Stuff
Robot10&Scheletor

Adds dragonbone set

Coins
Clyde

Adds 3 kind of Coins to your game

Sneeker
AntumDeluge

An explosive nuisance.

More Upgrade Packs
nolombic

Upgrade your upgrade packs so you can have even higher stats!

Surprise Blocks
Wuzzy

Randomly spawns surprise blocks closely about ground level.

daymachine
niwla23

Make day by using one mese crystal!

Decraft
iarbat

De-craft items with the decrafting workbench.

Bows
AiTechEye

A easy bow mod with arrows

Trucraft
mt-mods

An alternative crafting system done entirely in the world.

Noriel Sylvire's Minerals Core Modpack
Noriel_Sylvire

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

Stairs Recycle
DumbDave961

Turn stairs into ingots, slabs, or different stairs. Smelt cobble stairs into stone stairs. Highly recommended for Oneblock survival. Based on Simple Recycle by Jolesh.

Waste
Jolesh

Adds Waste and ways to recycle it into useful resources

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!

Unstable Caves
M BLOC

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

Sticks Stones
MikeRedwood

Makes Sticks from leaves and scatters small stones

Survival
Nathan.S

Adds several survival related items.

Ben's Gear
MissingTextureMan101

Attach tool parts to create new tools and add a whole new layer of strategy to your tool crafting!

No Melterns, no tools
InfiniteCoder01

You can't craft tools without melters now. Progression becomes harder