Minecraft Java 1.21 Mods
Browse 3,588 free mods for Minecraft Java 1.21 — popular picks include Every API, KubeJEI, MoeMusic.
Updated daily
Every API
As you read the name this modpack adds all the API's that are present in the Minecraft API library. You can now download any mod without worrying about the API's that you will need to find manually, just download this modpack and you're all set.
KubeJEI
Advanced JEI support for KubeJS
MoeMusic
In-game music player with plugin-based multiple music sources and server-synced playback. 游戏内音乐播放器，支持安装多个插件音源，支持服务器同步点歌。
Fabric Database H2
Fabric database module for H2.
κoωo (kowo-lib)
Fancy™ kotlin syntax for oωo-lib
Netty Memory Tweaker
Adds a netty allocation options to the settings menu.
CustomCapes
# Custom Capes Ever wanted a cape that's truly your own? With **Custom Capes**, you can design, edit, animate, and wear completely custom capes directly inside Minecraft. No external editors, no complicated setup—just install the mod alongside Fabric API
Lag Detective
Lag Detective is a lightweight diagnostics mod that helps answer where the lag is coming from.
SGL (Super GUI Lib)
Super GUI Lib - A library for creating beautiful GUIs without assets.
Unnamed Common Library (UCL)
A very simple, easy to use configuration library that fits right in your mod!
Custom Background Music
Framework for adding custom background music to your game
DinoCore
A library mod to organize and run my collection of realistic high-end minecraft dinosaur mods
netlib
Kotlinx Serialization for custom payloads.
VoiceLib
Minecraft Voice Recognition Library
Don't Crash Obscura
Crash-guard mod for NeoForge 1.21.1 that intercepts Tom’s Storage capability lookups and inventory tracking to prevent server crashes from invalid caches, failing safely instead of halting your world.
Itematic
A mod that adds data-driven items to the game, and much more!
Kite (Kotlin Scripting)
Kite is a plugin that provides a Kotlin scripting runtime for Paper-based Minecraft servers
custom-crafter-api
An advanced PaperMC crafting engine for building complex recipes with NBT-supported custom items.
The Collective, The Aeronautical Edition
A create Aeronautics Modpack Made for The Collective SMP
BlockbenchLib
Rendering and animation library for implementing free formatted blockbench models into Minecraft
farmer's attributes
a mod that adds some player attributes related to farming and cooking.
blbiLibrary — A Library For blbi Plugins
A Library For blbi Plugins
Sable: RagdollLib
A library for quick ragdoll creation via code and data packs.
SinoCore
The core library of SinoSeries.
UIFramework
Custom items and abilities framework.
LibZ Rework
This mod is a rework for Minecraft version 1.21.11 by LibZ (a library mod for some Globox_Z mods and for Player Level Skills).
Unstable Twist
A chaotic Minecraft plugin that adds powerful custom weapons inspired by Unstable SMP and Heartless Horizon.
XunLib
A common code library designed to ease mod development
Advanced Macro Engine
A high-performance scripting and macro execution framework for Minecraft Java Edition datapacks. Provides fiber scheduling, modular APIs, and multi-version overlay support out of the box.
Carpetlogging
Allows almost every non solid block to be covered with carpets in a dynamic way !
TweakerooFeaturesMenu
This mod adds a new and more convenient function switch interface to the Tweakeroo mod.
BreweryX Recipe Book
Automatic in-game guide for BreweryX. No more Wikis! Thank you: Brim🦊
Piston Command
Push block entities like on Bedrock and make pistons work the way you want with tags
Provenance
Provenance is a mod that allows developers to add abilities to players, as well as the systems to manage and execute them.
Bossbar Lib
A simple bossbar library allowing for per entity bossbars
IFC-Integrations
Unite the worlds of Ice and Fire and MCA Reborn with legendary relics, enhanced creature interactions, and a new way to experience both mods together.