Minecraft Java 1.21 Mods
Browse 3,585 free mods for Minecraft Java 1.21 — popular picks include Hammer Animations Mod (1.21.1, 1.20.1) – Run Mods with Bedrock Animations, Polymer Patch For Farmer's Delight Mod (1.21.11) – Helps Make Farmer’s Delight Work Fully Server-Side, Chrysalis Mod (1.21.4, 1.21.1) – A Framework to Customize Game Mechanics.
Updated daily
Hammer Animations Mod (1.21.1, 1.20.1) – Run Mods with Bedrock Animations
Hammer Animations Mod allows other mods to use models and animations from Minecraft Bedrock Edition. This is a library mod, which means it works in the background and adds no new content by itself. It simply provides the necessary tools for other mods to function correctly. You only need to install this mod if another […]
Polymer Patch For Farmer's Delight Mod (1.21.11) – Helps Make Farmer’s Delight Work Fully Server-Side
Polymer is a library mod that assists with server side content. It helps players enjoy modded content server-side without having to install mods on the client side. Polymer Patch For Farmer's Delight Mod basically allows servers to run the Farmer's Delight mod on the server side, so that players can enjoy it without having to […]
Chrysalis Mod (1.21.4, 1.21.1) – A Framework to Customize Game Mechanics
Chrysalis Mod is a library that other mods need to work correctly. You usually only need to install it when another mod lists it as a requirement. This mod provides a shared set of tools and features, like systems for camera shakes, custom music in structures, and a way to pick up mobs in buckets. […]
Enchanted Bookshelves Mod (1.21.11, 1.21.1) – Make Your Library Sparkle
Enchanted Bookshelves Mod adds a subtle shimmering visual effect to enchanted books placed inside chiseled bookshelves. Features: Adds glowing visual effects to enchanted books in chiseled bookshelves. Cosmetic only. Requires both server and client to display the effect. Screenshots: Enchanted Bookshelves Mod Download Links For Minecraft 1.21.11 Fabric version: Download from Server 1 – Download […]
Sketch Mod (1.21.1, 1.20.6) – Unlocks Custom Boats and Animations
Sketch Mod provides a collection of tools and APIs for other mods to use. As a library mod, it helps with creating things like custom configuration files and new animations for mobs. The mod also adds special events for shield blocking and a system for making new boat types. Features: Config API: Gives other mods […]
TSFlareons Item Core Mod (1.21.8, 1.21.1) – Play Datapacks with Custom Items
TSFlareons Item Core Mod adds custom items that are required by certain datapacks. It acts as a core library because datapacks alone cannot add new items to the game. You will not find these items in survival mode unless you are also using the datapack they were made for. For example, this mod is necessary […]
GooeyLibs Mod (1.21.4, 1.20.1) – Simplify UI Design
GooeyLibs Mod is a versatile and essential library mod for Minecraft, designed to facilitate the creation of user interfaces (UIs) for existing game screens on both Forge (NeoForge) and Fabric platforms. This mod serves as a powerful tool for mod developers, enabling them to enhance and customize the front-end UIs of their mods efficiently. Features: […]
CCore Mod (1.21.1, 1.20.1) – Library For Calemi Mods
CCore Mod is a library mod developed by the popular mod developer Calemi. The mod is a required dependency for certain mods – Nexus, Sledgehammers, Calemi's Economy, Calemi's Blueprints, & Kray's Magic Candles. Basically, these mods require CCore to be installed alongside them. As a player, you only need to install this mod if another […]
Temporal API Mod (1.21.4, 1.20.1) – Makes Other Great Mods Work
Temporal API Mod provides a framework to make creating other Minecraft mods easier and more flexible. This mod does not add new gameplay features for players directly. Instead, it is a library that helps other mods work by reducing repetitive code and simplifying the development process. Features: Provides object factories to help create new game […]
MagicLib Mod (1.21.10, 1.20.1) – To Beat Magic with Magic
MagicLib Mod is a library of versatile mod dependencies. Features: Compat API Supports multi-version compatibility for Minecraft 1.14+ on Fabric Loader. Provides compatibility APIs that abstract differences between Minecraft versions. Allows developers to reuse the same code across multiple MC versions, reducing the impact of Mojang’s internal changes. Dependency Check Includes a dependency checking system […]
SDM Engine Core Mod (1.21.1, 1.20.1) – The Engine Powering Advanced Mods
SDM Engine Core Mod provides a set of tools for other mods to use. As a library mod, it does not add any new content like blocks or items by itself. You only need to install this mod when another one requires it to work properly. Features: Acts as a core library that other mods […]
Brandon's Core (1.21.1, 1.20.1) – Power Up Your Modded Game
Brandon's Core is the core mod that will be used by most of brandon3055's mods. It provides base ASM functionality and contains common classes. Features: Acts as a required library for other mods like Draconic Evolution to function. Contains a collection of common code and classes that other mods can share. Provides base classes for […]
iChun Util Mod (1.21.5, 1.20.1) – Run Mods Like Portal Gun
iChun Util Mod is a shared library required by a couple of iChun’s Mods. Example: iChun's Hats Mod, Portal Gun Mod, Sync Mod, The Doors Mod, Keygrip Mod, Attachable Grinder Mod, Hat Stand Mod, Gravity Gun Mod, Hat Stand Mod… Made for Minecraft 1.5 or later. Features: Acts as a required shared library for many […]
Quilt Kotlin Libraries Mod (1.21.1, 1.20.1) – Kotlin Wrappers for QSL and Minecraft
Quilt Kotlin Libraries, or QKL for short, is Quilt’s official Kotlin wrappers for Minecraft. Quilt Kotlin Libraries Mod also bundles the Kotlin StdLib, and some Kotlinx libraries. It is worth noting that you do not need Fabric Language Kotlin with Quilt Kotlin Libraries installed. The Quilt loaded is a necessity for this library mod to […]
Decorative Core Mod (1.21.1, 1.20.1) – The Base for Cool Chests
Decorative Core Mod provides the essential code for other decorative storage mods to work correctly. It is a required library that supports mods in the Decorative series, like Decorative Storage. This mod runs in the background and does not add any of its own blocks or items to the game. Features: Acts as a required […]
Ghasts Update Mod (1.21.4, 1.20.1) – Happy Ghosts And More
Ghasts Update Mod is a mod inspired by the announcement at Minecraft Live March 2025, bringing new features centered around ghasts, including Dried Ghast, Ghastling, and Happy Ghast. Requires Geckolib for versions prior to 1.0.3, and allows players to experience unique mechanics such as raising Ghastling, riding Happy Ghast, and adjusting undrying speed through game […]
Epic Fight Invincible Lib Mod (1.21.1, 1.20.1) – Craft Unique Combat Moves
Epic Fight Invincible Lib Mod provides a library for creating custom weapon combos and skills for the Epic Fight mod. It helps modders and data pack creators easily add new combat moves with unique animations and effects. Features: Lets you create custom weapon skills from a simple JSON file. Allows for complex combos using different […]
Datapackets Functions LIB Mod (1.21.10, 1.20.1) – Library Dependency Mod
Datapackets Functions LIB Mod is a library mod that is required to be installed by the player if any of the mods they use require it as a dependency. The mod provides developers with some useful functions and is compatible with all versions of Minecraft. The mod by itself does not introduce any new content […]
Zigy's Player Animator API Mod (1.21.1, 1.20.1) – Bring Your Player to Life
Zigy's Player Animator API Mod helps other mods play custom animations for your character. This is a library mod, which means it doesn't add any animations by itself. Instead, it gives other modders the tools they need to make their own animations work in the game from both the server and client side. Features: Acts […]
Custom Portal API Reforged Mod (1.21.10, 1.20.1) – Creating Portals to Any Dimension
Custom Portal API Reforged Mod is the Forge (or NeoForge) port of the original Custom Portal API mod, which only has a Fabric version. This is a library mod and does not make any new additions to the game by itself. The purpose of this mod is to facilitate easier coding for mod developers who […]
Lazr's Lib Mod (1.21.1, 1.20.1) – The Engine for Lazr's Mods
Lazr's Lib Mod provides the shared code and tools needed for other mods to work properly. It is a library mod, which means it doesn't add any new content to the game by itself. You only need to install this mod if another one requires it. Features: Includes tools for drawing custom screens. Offers utilities […]
FDLib Mod (1.21.1, 1.20.1) – Code for Cinematic Bosses
FDLib provides a collection of shared tools and systems that other mods need to work properly. This library adds features like model and animation loaders, client-side cutscenes, custom boss bars, and configuration options. It serves as a foundation that certain mods require to function. Features: Adds a loader for Bedrock models and animations. Supports client-side […]
SDM UI Lib Mod (1.21.1, 1.20.1) – Powering Custom Mod Menus
SDM UI Lib Mod simplifies the creation of custom user interfaces for other Minecraft mods. This is a library mod, which means it provides tools for other mods to use. It works as an alternative to FTB Library for SDM mods. By itself, the mod does not add any new content to your game. You […]
GTBC's Spell Lib Mod (1.21.1, 1.20.1) – Centralized Spell Library
GTBC's Spell Lib Mod is a developer-focused library mod designed to streamline the creation of add-ons for Iron’s Spellbooks (ISS). Features: Provides a shared library to simplify the development of Iron’s Spellbooks add-ons. Eliminates the need to manually copy common ISS elements across different add-ons. Designed for mod developers to streamline spell and magic-related content […]
Jinxed Lib Mod (1.21.1, 1.20.1) – Advanced Tools for Your Modpack
Jinxed Lib Mod is a library that helps make multi-loader mods more easily. This mod also provides tools for data packs, which can be useful for modpack creators. Features: Simplifies the process of registering new game content. Lets you make any item compostable using data packs. Allows you to turn any item into furnace fuel […]
Extra Lib Mod (1.21.1, 1.20.1) – Let Your Favorite Mods Load
Extra Lib Mod provides shared code that other mods need to run. This is a library mod, so it does not add any new content to the game on its own. You should only install it when another mod lists it as a requirement. Features: Includes helpful code pieces for other mods to use quickly. […]
Iglee's Library Mod (1.21.3, 1.20.1) – Library for iglee42's Mods
Iglee's Library Mod provides essential functionalities and shared code for iglee42's mods. Iglee's Library Mod Download Links For Minecraft 1.21.3, 1.21.2 NeoForge version: Download from Server 1 – Download from Server 2 For Minecraft 1.21.1, 1.21 NeoForge version: Download from Server 1 – Download from Server 2 For Minecraft 1.20.6 NeoForge version: Download from Server […]
Kev's Library Mod (1.21.1, 1.20.1) – The Foundational Cornerstone for Kev's Mods
Kev's Library Mod is the foundational cornerstone for all of Kev's mods. While it doesn't do much on its own, it provides essential functionalities and integrations that other mods can depend on, reducing hard dependencies across all of Kev's mods. Some mods that use Kev's Library: Kev's TieredZ Modifiers, Exploria, Kev's Equipment Sets, Kev's TieredZ […]
CooParticles API Mod (1.21.1) – An Library to Spawn Particles
CooParticles API Mod is a library that provides refactored data packages to allow clients to accept more Minecraft particles, enabling different players to synchronize their rendering and exceed the particle limit of 16384. How to use: Create a particle class that inherits from ControlableParticle. Example Particle class TestEndRodParticle( // Parameters required for Particle world: ClientWorld, […]
Chunk Activity Tracker Mod (1.21.1, 1.20.1) – See Your Server's Hotspots
Chunk Activity Tracker Mod tracks player activity within each chunk of the world. It records details like how long players stay in an area and how many blocks they place. This mod is a library, meaning it works in the background to provide tools for other mod developers and doesn't add gameplay features on its […]
SI: API Mod (1.21.8, 1.21.1) – Library Dependency Mod
SI: API Mod is a library API created by the popular mod development team Soncresity Industries. The API provides a modular and unified backend interface that powers all core projects developed by the team. As a player, you only need to have this mod installed if another mod requires it as a dependency. Features: Library […]
CarrasconLib Mod (1.21.1, 1.20.1) – The Key to Running New Mods
CarrasconLib Mod provides a shared set of tools that other mods need to work correctly. It is a library mod that organizes common code, helping other additions run smoothly. You will need to install this mod for other specific mods to function in the game. Features: Acts as a shared library, providing common tools for […]
Creo API Mod (1.21.1, 1.20.1) – Library API For Mod/Datapack Development
Creo API Mod is a multi-purpose API for Minecraft mod/datapack development. It addresses three main issues that are not acknowledged by other APIs. A list of features, as noted on the official page, is given below. Features: Over 50 new Block, Item, Entity Type, Enchantment, & Biome tags. Expanded version of BlockSettings & ItemSettings for […]
ShadowHunter22's Config Library Mod (1.21.4, 1.20.1) – Library For ShadowHunter22's Mods
ShadowHunter22's Config Library Mod is a library mod created by the popular mod developer ShadowHunter22. As a library mod, the mod by itself does not add anything new to the game, but is required as a dependency by other mods. The mod basically facilitates an environment that makes development more convenient for the developer. Features: […]
More Structure Processors Mod (1.21.1, 1.20.1) – Library For Mod/Datapack Developers
More Structure Processors Mod is a library mod that makes it easy for mod developers and datapack developers to work with structure processors. These are files that deal with structure generation in the game world. As a player, you only need to have this mod installed if another mod requires it as a dependency. Features: […]
Exclusions Lib Mod (1.21.1, 1.20.1) – Library Dependency Mod
Exclusions Lib Mod is a library mod that makes it easy for datapack developers to work with .json files. As a player, you only need to have this mod installed if another mod requires it as a dependency. Features: Library dependency mod. Makes it easy for datapack developers to deal with .json files. Screenshots: Exclusions […]