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Minecraft Java 1.21 Mods

Browse 1,122 free mods for Minecraft Java 1.21 — popular picks include Fabric Lobby, Iron AI, PolyTech.

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Fabric Lobby
1.21fabric

Fabric Lobby

Fabric Server-Side mod that adds /lobby command to teleport to a configurable location, and another to go back to where you were.

738downloads
Iron AI
1.21fabric

Iron AI

A customizable AI chat assistant for Minecraft that can learn words, respond to messages, and be taught new responses with simple commands like /ironai teach

736downloads
PolyTech
1.21.11fabric

PolyTech

a server-side tech and automation mod for Minecraft 1.21.11, built on the Fabric API using Polymer. It introduces a comprehensive energy network and a suite of machines designed to process resources and automate crafting.

735downloads
Digitech
1.21.4neoforge

Digitech

The best technology mod

732downloads
BeastTokensProxy
1.8.8

BeastTokensProxy

Bungee/Velocity side hook for BeastTokens

731downloads
AntiNbtKick
1.21.6fabric

AntiNbtKick

A mod that prevents your player from picking up items that exceed the NBT data limit and prevents being kicked in general.

727downloads
XaerosMapPlugin
1.2.1

XaerosMapPlugin

Xaero's Map plugin is a lightweight plugin for servers using Xaero's Minimap and Xaero's World Map. The plugin prevents different worlds from sharing or overlapping map data, ensuring that every world maintains its own unique map.

723downloads
Relocators
1.21.5

Relocators

Craft Relocators to pick up and move containers such as Chests and Gamemode 4 Machines.

722downloads
WorldSystem
1.17

WorldSystem

Give players the ability to create their own world to play on, without using different servers. (per player worlds)

718downloads
A Crazy Adventure: Science & Survival
1.21.1neoforge

A Crazy Adventure: Science & Survival

A blocky landscape with forests, mountains, a backpacked character facing a machine, and a purple Nether portal under bold white title text.

716downloads
EntityBatch
1.21.11fabric

EntityBatch

Entity Render Batching — sorts entities by type before drawing them so the GPU can render all cows together, all pigs together, etc. instead of switching between types randomly. Fewer GPU state switches = better performance in crowded scenes.

715downloads
Logout Dummy
1.18

Logout Dummy

A NPC dummy represents offline players, showing their skin and carrying their gear.

710downloads
Arcane Repository
1.21fabric

Arcane Repository

Store your items and automate crafting with expansive libraries.

705downloads
Mini 1.21 Loot Farms
1.21.4

Mini 1.21 Loot Farms

Extension pack for Mini Factories! Containing: 1 Mini Wind Charge Farm and 2 different Mini Vault Loot Farms to get a bigger reward after finishing a vault run!

696downloads
Biomorphosis
1.21.1neoforge

Biomorphosis

A mod about mutations and evolution, where you control an organic ecosystem, creating structures and creatures from living matter. Harness biomass to develop your colony, but be prepared for the dangers your experiments may bring

681downloads
Simple Batteries
1.21.8neoforge

Simple Batteries

Adds upgradeable battery blocks.

676downloads
kLocks
1.21

kLocks

kLocks let's you lock chests, barrels, etc. easily!

671downloads
Tome of Echoes
1.21

Tome of Echoes

There's no better method of storing and placing blocks!

667downloads
Strength 4
1.21.8fabric

Strength 4

This mod give you strength 4 portion in your game/minecraft world this very use full to figth with you friend more damage more win

665downloads
Tom's Loot
1.21fabric

Tom's Loot

This modpack adds a variety of loot tables and can be used by other mod developers for structure mods and other mods with loot tables as a basis.

660downloads
Ender Sender: Remote Block Depot
1.21.1fabric

Ender Sender: Remote Block Depot

A mod which lets you move items straight to your inventory as you use them up, coming from a special kind of chest.

655downloads
physicsmod-liquid-bucket-addon
1.21.11fabric

physicsmod-liquid-bucket-addon

addon for physicsmod added new bucket tool

647downloads
MaxGraves
1.21

MaxGraves

Graves and more graves for your Minecraft server

647downloads
Lockable
1.21quilt

Lockable

Adds locks and keys to allow players to protect their items, or steal from others.

644downloads
NekoTech
1.21fabric

NekoTech

This is a lightweight tech Mod themed around cats.

643downloads
Create: Archived
1.21.1neoforge

Create: Archived

Stop belt lag! Automatically compresses thousands of items into a single entity on belts and chutes, fully compatible with all Create processing machines.

639downloads
Idle Generators
1.21.1neoforge

Idle Generators

Place a generator and let it work, even offline. Craftable block-generators that produce resources passively over real time, with a live HUD and full Cloth Config support.

634downloads
Create addon: Info Display
1.21.1neoforge

Create addon: Info Display

Info Display is an addon for Create that adds two information panel blocks: one for Item Vault, one for Fluid Tank.

630downloads
Arch's Aeronautics Exploration
1.21.1neoforge

Arch's Aeronautics Exploration

A modpack focusing on exploring the possibilities of Aeronautics, combining aeronautics, create, mekanism, and refined storage.

626downloads
Shared Inventory (NeoForge)
1.21neoforge

Shared Inventory (NeoForge)

Sync your inventory with friends in real-time!

622downloads
Forming Press
1.21.5

Forming Press

Create a forming press to unlock more efficient recipes for all types of brick and charcoal.

619downloads
Chest Transporter: Relocated
1.21neoforge

Chest Transporter: Relocated

Move your chests around with ease!

618downloads
CompassTrack
1.20

CompassTrack

Track players in real time with your compass — ideal for PvP, manhunts, and survival. Includes cooldowns, permissions, and live updates.

618downloads
Immersive Factory - Create and Immersive Petroleum
1.21.1neoforge

Immersive Factory - Create and Immersive Petroleum

An immersive factory experience with Immersive petroleum and Create in the focus but with adding mods like Refined Storage. Currently around 120 Mods.

617downloads
Masters Of Aeronautics
1.21.1neoforge

Masters Of Aeronautics

(Remake Of MrBeardStones Just Create SMP 2) Create mod and mekanism. With mass Storage and tech

617downloads
GravesSystem
1.21

GravesSystem

GravesSystem replaces item drops on death with an immersive grave system that spawns the player’s head, preserves their exact inventory layout, displays a live hologram, and restores items instantly — all while remaining lightweight and highly performant.

616downloads