Minecraft Java 1.21 Mods
Browse 3,587 free mods for Minecraft Java 1.21 — popular picks include CracoBan, FluxAPI, Adventurers' Guild.
Updated daily
CracoBan
A lightweight Paper plugin that permanently bans selected Minecraft items from player inventories.
FluxAPI
A Simple Library /API designed to make plugin creation easier
Adventurers' Guild
This mod adds an adventurer’s guild! You can customize the tasks yourself (even items from other mobs).
Notime
A lightweight Minecraft server time management and anti-addiction plugin that supports the Folia server.
SignalsLib
A tiny Java signal/event library with optional Bukkit/Spigot integration, backed by GEB
ScoreboardAPI-FOLIA
Packet-based scoreboard, nametag & tab API for Paper and Folia, per-player sidebars, MiniMessage, animations, zero depe
SDLore
Create and edit custom item lores with our powerful web editor. Import it easily in-game with one command.
unicornpkg
A package manager for ComputerCraft, packaged as a datapack
Just Core
A lightweight server-side API and shared infrastructure layer for Just Vanish, Just Essentials, and future Just mods.
MittelLib
A useful library simply made for mmmjjkx plugins' series
PlugTrace
Catch broken plugin updates, missing commands, dependency failures, and silent regressions before players do.
MMD OreSpawn Library (26.2, 1.21.1) – Customizable Spawning of Ores
MMD OreSpawn Library is a library mod that provides better control over the spawning of ores in Minecraft. How it works: Ore Spawn parses all of the .json files found in orespawn and adds ore generators to the game based on those files. The JSON structure looks like this: [ { "dimension": -1, "ores": [ […]
Spell Utils Mod (1.21.1) – Library for Iron's Spells and Spellbooks Addons
Spell Utils Mod is a utility API designed to help developers create addons for Iron's Spells and Spellbooks Mod. It provides ready-to-use systems, classes, and tools that simplify the process of building custom spells, mobs, and bosses. This mod is mainly intended for mod developers, not regular players. Features: Mob & Boss Systems Custom spellcasting […]
Cobblemore Lib Mod (1.21.1, 1.20.1) – Library for Cobblemore_Studio's Mods
Cobblemore Lib Mod is a shared library used by several mods from Cobblemore_Studio. It stores common resources such as items, assets, recipes, and code so they can be reused across multiple mods. Some of the developer's mods require this library to function. Features: Stores shared items, assets, recipes, and code. Allows multiple mods to use […]
Immersive Furniture Mod (1.21.1, 1.20.1) – Custom In-Game Furniture Creator
Immersive Furniture Mod is a decoration mod that allows players to create and use custom furniture directly inside Minecraft. Instead of installing many different furniture mods, you can design your own objects or download ready-made furniture from the online library. The mod includes a large online library with thousands of community-made furniture pieces that can […]
Wathe Murder Mystery Mod (1.21.1) – Design for A Social Deduction Game
Wathe Murder Mystery Mod is the core gameplay mod used for the Last Voyage of the Harpy Express experience. It provides the systems required to run a multiplayer murder mystery game inside Minecraft. Features: Provides a framework for multiplayer murder mystery social games. Handles the core systems required for gameplay: Role assignment Round management Game […]
Navas ZA Megas Mod (1.21.1, 1.21) – 45 Mega Evolutions For Cobblemon
Navas ZA Megas Mod adds all Mega Evolutions from Pokémon Legends ZA into Minecraft, with 45 Megas included. It designed to integrate, but must not be mixed with other Mega packs to avoid conflicts. Features: Adds 45 Mega Pokémon, all Megas from Pokémon Legends ZA, including DLC. Works only with the Mega Showdown Data framework. […]
Aaron Mod (1.21.1, 1.20.1) – Code Library
Aaron Mod is a library mod created by the developer Aaron that provides shared code for many of their other mods. This mod reduces duplicated code across multiple projects by including common utilities and helpers in one place. Aaron is not a standalone mod – it's a required dependency that other mods use to function […]
Cobblemon Tim Core Mod (1.21.1, 1.21) – Essential Library For Pokemon Modding
Cobblemon Tim Core Mod serves as a shared codebase to reduce code duplication across the developer's Cobblemon-related mods, providing common utilities, fixes, and extensions. It's essential for modpacks using multiple "Tim" Cobblemon addons, ensuring consistent behavior and performance. Features: Base classes for mod structure and config handling. Simplified config creation with overridable settings. Tools for […]
Mechanomania Core Mod (1.21.1) – Library for Mechanomania Modpack
Mechanomania Core Mod is the core mod for Mechanomania modpack. It manages internal features and provides improvements that make the modpack run more smoothly and consistently. Features: Mods compat Mod tweaks Vanillia Tweaks Optimizations New Recipe types New advancements New items Mechanomania Core Mod Download Links For Minecraft 1.21.1, 1.21 NeoForge version: Download from Server […]
Voltaic API Mod (1.21.1, 1.20.1) – Dependency For Electrodynamics And Nuclear Science
Voltaic API Mod designed to unify and support multiple mods. It replaces older dependencies and ensures smooth integration across industrial, nuclear, and military‑style mods, all aimed at recreating the Voltz experience for newer Minecraft versions. Features: Required for Electrodynamics, Nuclear Science, Assembly Line, Ballistix, Blastcraft, MFFS, ICBM, and more. Central to the effort of modernizing […]
Travelers Lib Mod (1.21.1, 1.20.1) – Library for Collinvht's Mods
Travelers Lib Mod is a technical support library used by Collinvht to build animal and creature-focused Minecraft mods. It does not add gameplay content by itself, but provides systems and tools required by other mods. Features: Core library for creature and animal-based mods Animal attribute system for easier creature setup Simplified and structured animal registration Async […]
Gamingbarns Gun Core Data Pack (1.21.11, 1.21.4) – Make Custom Firearms Easily
Gamingbarns Gun Core Data Pack is a tool that helps you create working guns in Minecraft without needing to know how to code. This datapack works like a library that other gun datapacks use to function properly. It makes adding guns to your world much easier and lets you customize gun stats like damage, reload time, […]
Epic Fight Avalon Mod (1.21.1, 1.20.1) – Unlock Custom Combat Animations
Epic Fight Avalon Mod expands the Epic Fight mod with a shared library of code. It holds common animation files together so other addons do not need to repeat the same work. This addon brings a fresh way to load frame-by-frame attack animations. It also packs in special tools to check for damage on multiple […]
Cloth Gamerules Mod (1.21.11, 1.20.1) – Search Functionality
Cloth Gamerules Mod reimagines the gamerules menu in Minecraft using the Cloth Config API. It offers new tools for managing game rules. Features: Easily find gamerules by their name or key. Convenient reset button for each rule to restore defaults. Filter gamerules by mods for better organization. Screenshots: Cloth Gamerules Mod Download Links For Minecraft […]
Haybale Mod (1.21.8, 1.20.1) – Registration, Networking, And Platform Services
Haybale Mod is a multiloader library mod designed to provide shared systems used across the author’s other Minecraft mods. Features: Designed specifically for multiloader mod development Annotation-based registration for entities, items, particles, and sounds Built-in packet system for networking Entity capability system support Platform-sided services such as server scheduling utilities Haybale Mod Download Links For […]
3D Variated Bookshelves Resource Pack (1.21.1, 1.20.1) – Texture Pack
3D Variated Bookshelves Resource Pack transforms flat bookshelf blocks into real 3D objects. It adds physical depth to the books so they stick out from the wood frame. You get different book arrangements on every block instead of the same repeating pattern. This makes large library walls and enchanting rooms look much better. The pack […]
MaLiLib Update Port Mod (1.21.11, 1.21.1) – Essential Mod Support
MaLiLib Update Port Mod provides shared systems such as keybind handling, configuration menus, GUI rendering, and utility functions. Features: Required library for mods like Litematica. Handles config menus, keybindings, GUI screens, and more. Originally made for LiteLoader, now ported for Fabric and modern MC. MaLiLib Update Port Mod Download Links For Minecraft 1.21.11 Fabric version: […]
Tweakeroo Update Port Mod (1.21.11, 1.21.1) – More Control, Better Building
Tweakeroo Update Port Mod is a versatile client-side mod packed with quality-of-life tweaks. From Accurate Block Placement to Free Camera and Gamma Override, this mod gives you fine-grained control over your gameplay. Features: Popular tweaks include: Hand Restock. Flexible/Accurate Block Placement. Fast Click (left/right) Gamma Override (see in the dark) Free Camera mode. Fully client-side; […]
Strawberry Lib Mod (1.21.11, 1.21.5) – Common Code Library
Strawberry Lib Mod is a library mod developed by the popular mod developer Moriya Shiine. Many of the mods created by this developer require Strawberry Lib to be installed alongside them. As a library, the mod by itself does not introduce any new content into the game, but it facilitates an environment that makes mod […]
FokusAPI Mod (1.21.11, 1.20.1) – Library For ScadeBlock’s Mod
FokusAPI Mod is a library mod developed by the popular mod developer ScadeBlock. As a library mod, the mod by itself does not add any new content into the game, but it is required as a dependency mod by many of the mods developed by ScadeBlock. Many of the datapacks developed by ScadeBlock also require […]
Combat Plus Core Mod (1.21.11, 1.20.1) – Compatibility Layer for The Combat Plus Series
Enter the realm of boundless combat possibilities with Combat Plus Core Mod, the essential library mod and compatibility layer that serves as the backbone of the Combat+ series. Designed to seamlessly integrate with a myriad of other mods, this core library facilitates an unparalleled level of inter-mod compatibility, ensuring that any mod utilizing its utilities […]
Formations Mod (1.21.11, 1.20.1) – Structure Library
Formations Mod for Minecraft that adds additional features to datapacks for generating structures. It provides a powerful API for creating custom structures and allows for more flexibility and control over structure generation. Formation is a powerful tool for modders who want to create custom structures and biomes in Minecraft. It is also a great mod […]
Configurable Mod (1.21.11, 1.20.1) – Decentralised Settings in a Mod
Configurable Mod is a compile/runtime config library that allows config settings to be decentralised, centralised or a combination of both if you like. The premise behind Configurable is everything is done for you, so all you need to worry about is what you want to configure. Features: The configurable.properties file tells Configurable what name the […]
MaLiLib Community Updated Mod (1.21.11, 1.21.3) – Configuration And GUI Library
MaLiLib Community Updated Mod is a community-maintained continuation of MaLiLib, a library mod that provides shared client-side code for Masa’s mods. It includes configuration systems, keybind handling, GUI components, and general utilities, allowing dependent mods to remain functional through community updates distributed via CurseForge. Features: Provides shared client-side code used by Masa’s mods Includes configuration […]
E-Utils Mod (1.21.11, 1.20.1) – Utility Library For Fabric Mod Development
E-Utils Mod focuses on configuration management, command registration, and inventory-based GUI creation, offering structured APIs and runtime features intended to reduce boilerplate and simplify ongoing mod maintenance. Features: Provides JSONC-based configuration management with comment support Supports automatic config migration, backups, and runtime hot reloading Offersype-safe configuration handling using Kotlin data classes Includes a fluent command […]