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Minecraft Java 1.21 Mods

Browse 157 free mods for Minecraft Java 1.21 — popular picks include Realism Tweaks Lib, RPPutils, Seva ya Utils.

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R
1.21.4neoforge

Realism Tweaks Lib

Lib that provides tags and data for Realism Tweaks

972downloads
R
1.21.1fabric

RPPutils

just some extra resourcepack utilities

228downloads
S
1.21.4fabric

Seva ya Utils

A utility mod for Seva ya Season 6, includes the server shop, milestones and custom currency

222downloads
S
1.8

StarMCLib

A library that contains utilities for Minecraft made by StarDevLLC.

90downloads
Q
1.21.4fabric

Quantics Core

Shared library for Quantics mods, providing a unified configuration system and common utilities.

32downloads
BCLib: Remastered
1.21.1fabric

BCLib: Remastered

BCLib Remastered is a powerful core library and API for Minecraft Fabric 1.21.1. It provides essential shared utilities, rendering tools, custom configs, and procedural models for BetterEnd and BetterNether. Specially optimized for modern modpacks!

33kdownloads
GSTools
1.21.8neoforge

GSTools

GSTools is a utility mod used by all my other game modifications.

23kdownloads
SopLib
1.16spigot

SopLib

A lightweight shared library for Sop plugins with multi-version support and common utilities.

48downloads
GabrieleCore Mod (26.2, 1.21.1) – Library for Gabriele_333's Mods
1.21.1

GabrieleCore Mod (26.2, 1.21.1) – Library for Gabriele_333's Mods

GabrieleCore Mod is a library and utility mod that provides essential systems and features used across Gabriele_333's mods. It introduces a modular network system, helper classes, and general-purpose utilities that simplify mod development and enable powerful interactions between blocks and items. It does not add new content on its own but is essential for enabling […]

Mythic Lib Mod (1.21.11, 1.20.1) – Support Mythic Mods With This Handy Library
1.21.11

Mythic Lib Mod (1.21.11, 1.20.1) – Support Mythic Mods With This Handy Library

Mythic Lib Mod is a foundational library mod designed to support Mythic Mods and other Minecraft mods requiring advanced features. It provides a wide range of tools and utilities, making it easier for mod developers to implement complex mechanics while maintaining stability and compatibility across mods. Features: Customizable Stats and Attributes: Offers a flexible system […]

Annotated DI Mod (1.21.11, 1.20.1) – Convenient Use With Minecraft Mods
1.21.11

Annotated DI Mod (1.21.11, 1.20.1) – Convenient Use With Minecraft Mods

Annotated DI Mod is a wrapper around Guice with a few extra utilities added for more convenient use with Minecraft mods. This allows the Dependency Injection design pattern to be used when making mods and APIs for them. Features: A central Injector for each mod allows mods to inject classes/interfaces from themselves and their dependencies. […]

Integrated API Mod (1.21.1, 1.20.1) – Library for CraisinLord's Mods
1.21.1

Integrated API Mod (1.21.1, 1.20.1) – Library for CraisinLord's Mods

Integrated API Mod is a library mod for the Integrated Structures series by CraisinLord. It puts shared utilities such as structure types and data abstractions into one shared mod. Features: Easy to use cartographer map trades. Expanded structure block limit from 48 to 256. Custom new and improved jigsaw manager. Tons of configuration options added […]

EMI Mod (1.21.1, 1.20.1) – Never Guess a Recipe Again
1.21.1

EMI Mod (1.21.1, 1.20.1) – Never Guess a Recipe Again

EMI Mod lets you easily see all the items and crafting recipes in Minecraft. It is an alternative to other recipe viewers like JEI or REI, but it comes with many extra features to improve your game. The mod is simple to use and only needs the standard Fabric API to work, with no other […]