Minecraft Java 1.21 Mods
Browse 18 free mods for Minecraft Java 1.21 — popular picks include InsaneLib, Enchant Limiter (RPG Tweaks), Spell Engine Extension (RPG Series Tweaks).
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InsaneLib
A set of common classes and utilities used by Insane's mods
Enchant Limiter (RPG Tweaks)
Limit the number of enchantments on an item.
Spell Engine Extension (RPG Series Tweaks)
Extends the mod 'Spell Engine' with additional functionality.
Alexandria Lib
Alexandria is a lightweight Minecraft library mod that provides shared utilities and a common foundation for other mods. It doesn’t add gameplay on its own but serves as a core dependency to make mods easier to build and maintain.
fweigel-util-lib
Shared client-side utility library for my Fabric mods. Provides common rendering, storage, UI, and sound utilities.
Visually Optimized
A collage of vibrant cultures, seasons with the serenity mod, optimisations with sodium and libraries along with inbuilt library to search between and surf through Modrinth from inside Minecraft. Now with a little tweaks in name and other stuff.
SimpleCore by Cooshh
A shared core library for Simple mods, providing common systems like economy support and shared utilities.
Speakeasy Utilities
A shared library providing common systems, utilities, and APIs for the Speakeasy mod collection.
InterdimensionalLib
Seamless mix of common utilities, systems and presets
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 […]
BjornLib Mod (1.21.1, 1.20.1) – Core Library For Mob And Effects
BjornLib Mod is a core library mod by FuriusMaximus, providing shared functionality for several of their mods, such as Dragon Mounts: More Dragons. It includes useful utilities and systems designed to streamline gameplay enhancements. Features: Ability Registry and custom ability events Particle Builder with magic-style glowing effects Lightning Builder for custom lightning visuals Leveling Builder […]
Chimeric Lib Mod (1.21.5, 1.21.1) – Shared Library With Common Code
Chimeric Lib Mod is a shared library mod developed by chimericdream, designed to provide common code and utilities for their suite of Minecraft mods. It is essential for ensuring consistency and ease of maintenance across various Minecraft versions. Features: Provides registry and data generation helpers for mod elements Includes color utilities for managing dyes and […]
Lodestone Mod (1.21.3, 1.20.1) – Library for Lodestar Team's Projects
Lodestone Mod is a library used by all mods under the Lodestar team, containing important backend code mostly used for rendering. Features: A lot of shaders Various helper classes & utilities. A simple screenshake implementation. Some commonly used attributes in Lodestar Team's mods. A system allowing for custom fire effects applied to entities. A particle […]
Knight Lib Mod (1.21.1, 1.20.1) – Expand Your Modding Toolkit
Knight Lib Mod is a code library that serves as a shared foundation for mods developed by its creator. This library mod introduces a key feature, the "Great Chalice" block, along with several utility functions that simplify adding common elements to custom mods. Features: Adds the "Great Chalice" block Provides utilities for mod development Designed […]
CoolCatLib Mod (1.21.1, 1.20.1) – Essential Library
CoolCatLib Mod is a utility library mod for Minecraft, specifically designed to help other mods with essential features and shared functionalities. It provides developers with a set of tools that can be easily integrated into various projects, saving time and improving mod compatibility. Features: Shared Utilities: Offers common tools and functions to simplify mod development. […]
Quantics Core
Shared library for Quantics mods, providing a unified configuration system and common utilities.
SopLib
A lightweight shared library for Sop plugins with multi-version support and common utilities.