Minecraft Java 1.21 Mods
Browse 3,913 free mods for Minecraft Java 1.21 — popular picks include Sophisticated Backpack/Storage Emerald Upgrade, Inventory Tabs, Effortless Building: Sophisticated (Enhanced Fork).
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Sophisticated Backpack/Storage Emerald Upgrade
Enhance your Sophisticated Backpacks/Storage with the Emerald Upgrade! This upgrade boosts storage capacity beyond Netherite!!
Inventory Tabs
Allows swapping to other in-world screens (blocks, entities, etc) via tabs. A fourth-generation rewrite of CakeWhip's InventoryTabs.
Effortless Building: Sophisticated (Enhanced Fork)
Advanced building QoL mod with mirror/array/shape modes, expanded reach, per-axis placement limits, backpack-based building upgrades, compact HUD counts, and clear missing-item feedback for survival building.
Dye Depot
Enhances your Minecraft experience with 16 vibrant new dyes and various other tweaks
Minestuck
A Homestuck Minecraft mod
[Moonsu] Better GUI Create Style for Tom's Simple Storage
Wood and Gold GUI for Tom's Simple Storage!
Reliable Backpacks
A fork of Backpacks for Dummies: A bare-bones backpack mod without any extra keybinds, menus or slots!
Tom's Metal Storage
A Unique take on the Tom's Simple Storage mod
Applied Soul
Added corresponding AE2 disks for Industrial Foregoing: Soul
Stackable Items
Modify the max stack size of any item you want, use commands to edit any itemstack size
TheTitansNeo
This project is an unofficial remaster mod for TheTitans.
Plenty O' Crates
Apple Crates for Biomes o Plenty
Loginar Storage
Storage and inventory improvements... and alien squid dudes
Chosen's Create: Integrated
Experience a reimagined Create journey by ChosenArchitect, seamlessly integrating Ars Nouveau, Just Dire Things, Refined Storage 2, and Replication into a unified, accessible progression.
Byg Crates
Apple Crates for Biomes You'll Go
Texture Pack Folders (Like Recursive Resources)
Mod allows folders with packs in them to work, mainly for organization. (Like recursive resources)
PTS-Deco
This Mod adds over 2000 Decorations models with that you can decorate your world
EquDeco
Equestrian Deco mod for Minecraft
Envelope
Letters. Packages. And Pigeons to deliver them across the world.
More Barrel Variants
Barrels for every kind of wood
Leather Bundles
Bundles, but with leather. Also keeps original rabbit hide recipe intact. (1.20.5 [and, presumably, 1.20.6])

InventoryTweak
Fast and easy inventory sorter
InventoryRollbackPlus
Inventory Backup Plugin for Spigot / Paper / Purpur - 1.8 - 26.1.2 - Backup, Restore, Rollback Inventories!
Create: Packagers PSI Compat
Allows Create packagers to interact with PSI (Portable storage interfaces)
Money for Everyone
Adds a Money System to your Multiplayer world
FastChest Revived
Makes chests use static models rather than BlockEntities for better performance
Apotheotic Creation
Adds compatibility for Apotheosis affixes/rarities in Create attribute filters.
More Chests
Adds more Chests to minecraft
Dynamic Crates
Apple Crates for Dynamic Integration
Smelting Sand in Blast Furnace
Smelt Sand Faster in the Blast Furnace
NBT Editor
Edit items, blocks, and entities in-game.
Backpacked: World of Color
Add-on for Backpacked! Adds 16 dye variants to the Standard Backpack!
Upgradable Backpack
Dyeable, renamable, wearable, and upgradeable backpacks (9-slots, 18-slots, 26-slots)
Cognition
Formerly Experience Obelisk. Overhaul your minecraft experience with strange and arcane technologies
Pumped Desert 2
Pumped Desert 2 is a remake of the Pumped Desert mod, it will add an ostrich that appears in the desert and savannah.Cactus and cow skull.The skull and cactus can be found in the desert.
Lock & Key
A mod that takes advantage of the vanilla tile entity locking system, making it accessible to survival players.