I’ve set up a modpack with all of the below mods included, if you’re not interested in downloading them all manually. The mods in this list are all at least updated to Minecraft version 1.12.2.
Applied Energistics 2
AutoPlant
Backpacks!
BiblioCraft
Carpenter’s Blocks
CodeChicken Lib
CoFH Core
CoFH World
EnderCore
EnderIO
Extreme Reactors
Inventory Tweaks
Just Enough Items (JEI)
Mantle
McJtyLib
Optifine
Pam’s HarvestCraft
Redstone Flux
RFTools
Tinkers Construct
Thermal Expansion
Thermal Foundation
Tree Chopper
WorldEdit
ZeroCore