Minecraft Java 1.21 Mods
Browse 3,935 free mods for Minecraft Java 1.21 — popular picks include Storage Recursion, SimpleRepair, I Can't Do Math!.
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Storage Recursion
Simple mod to remove limits that Mojang placed
SimpleRepair
Simple Repair Plugin/Mod for Paper, Sponge and Fabric
I Can't Do Math!
Calculate resources in shulkers, double chests and stacks
Nearby Inventory Crafting
Craft using items from nearby chest's without moving them
Horarium
Adds the Hourglass, an essential tool for keeping track of time!
Corpse: Refined
Your death leaves behind a corpse wearing your own skin, holding everything you had on you — recover it and your armor equips itself automatically. Left too long, it slowly decays down to bone.
PlayerDataSync
Seamless Cross-Server Player Data Synchronization
Loot Log: Pickup Notifier
A feature rich and configurable pickup notifier
PlayerVaultZ
Advanced player vault plugin with pagination system
Paps Superflat 2 Multiplayer Ready
Mutiplayer Ready (NO SERVER NEEDED just join your friends world directly), Questing, survival pack reminiscent of classic sky block with chickens, sieves, refined storage and modern mods like create and Ad Astra
VillagerViewer
VillagerViewer allows players to view and edit a villager's inventory by sneaking and right-clicking on them with a stick (configurable).
SPR Additions
This mod adds many new features to the Sable: Player Ragdoll mod
Aluna's Pocket Realms
Adds personal pocket dimensions accessed via tiered keys. Create your own private rooms for storage, farming, or customization!
magnetic-telekinesis
Magnetic enchantment: Drops and XP fly straight into your inventory

PerWorlds
A plugin that allows you to store player data per world
MultiEnderChest
Add an enderchest that shares the same inventory between players.
Sophisticated Backpacks Etched Integration | Unofficial Port
1.21.1 Port of thatonehelljumper's Sophisticated Backpacks Etched Integration
Cobblemon PC Plus
Supercharge your PC with one scrollable list across all boxes, plus filters, favorite pinning, sorting, UI scaling, and type icons. Client-side PC storage enhancer for Cobblemon on NeoForge & Fabric.
Arda's Backpack
Expand your inventory with Arda's Backpack! This essential storage mod adds portable, upgradable backpacks to Minecraft, allowing you to carry more loot and manage your items with ease. Upgrade from basic leather to powerful ore-infused tiers.
Better Revive
A death & revive system with graves, revive potions, grave compass, revive scroll teleport, Hardcore Support and more!
ExtendedItemTransport
additional Hopper, automatic Crafting, extended dropper, Item teleporter
Pocket Dimensions (Reforged)
A trial version of the original Pocket Dimensions data pack. It has texture issues and was transferred from version 1.21.11 to 1.21.1.
AdvancedPlayTime [1.21 - 1.26]
⏳ The ultimate playtime tracker — fast, precise, fully customizable.
24w33a Bundle Recipe
backport for the 24w33a bundle recipe
The Portable Jukebox
You can put a disc into the portable jukebox while its in your inventory and it will play it.

Quick Swap
Quickly swap your inventory and hotbar using a configurable keybind.
Shader Essentials 2
Enhance your Minecraft adventures with a modpack that optimizes performance, streamlines inventory management, aids exploration, and provides essential crafting information for a smoother gameplay experience.
Cobblebros
Cobblemon, mega showdown, Legendary monuments, backpacks, waystones, and more!
PooperMC
The all-in-one solution for any server. Message Logging, Mention, Chat Color, Description / MotD, Muting, Reporting, Staff-Chat, Friends, Parties, Vein-Mining, Whitelist, Better-AI, AFK, Menu Commands, Global Ender Chest, Death-Banning, Anvil-Cap and more!
ProbablyBackpacks
Backpacks… probably. I guess.
Cardboard Boxes
An early game alternative to shulker boxes!
Hat Club
Purely server-side or singleplayer. Dyeable, enchantable, repairable, protective hats with fun acquiring mechanics.
Bundle Recipe UpPort
Bring back the old bundle recipe! The bundle crafting recipe was removed in snapshot 21w18a (Minecraft ~1.18).
Enchantment Rarities
A lightweight client-side mod that adds a color-coded rarity system to enchantments.
PickupVillagers
Make villager transportation easier.
Create: Simple Coins Renewed
Add-on for Create that adds coins to use as currency in multiplayer. Ported to 1.21.