A hardcore technical modpack with few mods.

Request Minimum RAM: 4GB or More

Minecraft 1.12.2 (Hadron 3.0.x) Modlist:

[Unmaintained] Inventory Tweaks

A Lib
AE2 Stuff
AE2 Wireless Terminal Library
Alchemistry
AppleSkin
Applied Energistics 2
Aroma1997Core
Aroma1997s Dimensional World
Baubles
BdLib
Better Builder's Wand
BetterFps
BiblioCraft
Biomes O'Plenty
Bonsai Trees 2
Bookshelf
Botania
Brandon's Core
Carpente's Block Update
Chameleon
Chicken Chunks 1.8.+
Chisel
Clumps
CodeChicken Lib 1.8.+
Compact Drawers
ConnectedTexturesMod
Cooking for Blockheads
CraftTweaker

Crafting Tweaks
Customized Dungeon Loot
Dark Utilities
Decocraft
Doomlike Dungeons
Draconic Evolution
Dungeon Tactics
Enchantment Descriptions
Ender IO
EnderCore
Environmental Tech
ExtraCells2

Extra Utilities
Extreme Reactors 2
Fast Leaf Decay
Flux Networks
FTB Backups
Guide-API
Hwyla
Iron Backpacks
Iron Chest
JourneyMap
Just Enough Energistics (JEE)
Just Enough HarvestCraft (JEHC)
Just Enough Item (JEI)
Just Enough Reactors
Just Enough Resources (JER)
LitLaunch
Mantle
Moar Tinkers
More Overlays
Mouse Tweaks
NetherPortalFix
No Mob Spawning on Trees
Open Terrain Generator (OpenTerrainGenerator / OTG)
OpenBlocks Elevator

Ore Excavation
p455w0rd's Library
Pam's Cookables - Pam's Harvestcraft Addon
Pam's HarvestCraft
Patchouli
PTRLib
Redstone Flux
Roguelike Dungeons
Server Tab Info
Shadowfacts' Forgelin
SimpleHarvest
Stacksize
Storage Drawers
Storage Drawers Extras
The Twilight Forest
Tinker's JEI
Tinkers Construct
Tinkers Extras
Tinkers' Tool Leveling
TPS Mod
ValkyrieLib
VanillaFix
Vanilla Harvestability
Wawla - What Are We Looking At
Wireless Crafting Terminal
Woot
ZeroCore 2

Minecraft 1.16.3 (Hadron 2.0.x) Modlist:

Advanced Mining Dimension

AppleSkin

Applied Energistics 2
Baubles - Reborn?
Better Advancements

Biomes O' Plenty
Bookshelf

Botania
Building Wands
Citadel
Cloth Config API (Forge)

Cooking for Blockhead
Cucumber Library

Crafting Tweaks

Curios API (Forge)

Cyclic

Dark Utilities
Enchantment Descriptions
Ender Chests
Ender Tanks
Fast Furnace

Fast Leaf Decay
Flat Bedrock
Flux Networks
FTB Backups
FTB Chunks
FTB GUI Library
FTB Ranks
FTB Teams
FTB Ultimine
Hwyla
Ice and Fire: Dragons in a whole new light!
Industrial Foregoing
Inventory Tweaks Renewed

Inventory HUD+
Iron Chests
JEI Integration
Just Enough Item (JEI)

Just Enough Resource (JER)

JEI Tweakers
Light Overlay (Rift/Forge/Fabric)
McJtyLib
Mekanism
Mekanism Additions
Mekanism Generator
Mekanism Tools
Mouse Tweaks
Placebo

Pam's Harvestcraft 2 - Food Core

Patchouli

Ranged Pumps
Reap Mod

Runelic
RFTools Base
RFTools Builder
RFTools Control
RFTools Power
RFTools Storage
RFTools Utility
ShetiPhianCore
Server Tab Info
Storage Drawers
Titanium

VanillaTweakers

VoxelMap

Waila Harvestability
Woot

XP From Harvest
XNet
XNet Gases

Basic minecraft with digital storage and solar panels