Minecraft Java 1.21 Mods
Browse 96 free mods for Minecraft Java 1.21 — popular picks include RFTools Utility Mod (1.21.1, 1.20.1) – Tons of General Tools and Utilities, RFTools Base Mod (1.21.1, 1.20.1) – Library for McJty's Mods, Cosmos Library Mod (1.21.1, 1.20.1) – Dependency for The Cosmos Mod Series.
Updated daily
RFTools Utility Mod (1.21.1, 1.20.1) – Tons of General Tools and Utilities
RFTools Utility Mod is the newest version of the original RFTools with tons of general tools and utilities. This is still alpha and currently only contains the teleportation system and the crafter. This mod is intended to be used together with RFTools Power and depends on RFTools Base and McJtyLib. Features: It contains the following […]
RFTools Base Mod (1.21.1, 1.20.1) – Library for McJty's Mods
RFTools Base Mod is the base mod for all tech mods by McJty. This includes RFTools Dimensions, RFTools Control, RFTools Power, Deep Resonance, XNet, and so on. Features: Dimensional Shard oregen, small amount in the overworld, more in other dimensions. The machine infuser. Base crafting materials for the other tech mods. The smart wrench. Security […]
Cosmos Library Mod (1.21.1, 1.20.1) – Dependency for The Cosmos Mod Series
Cosmos Library Mod is a collection of helper functions designed to make creating Minecraft mods quicker. It doesn't add any new features to the game itself. Instead, it serves as a base for other mods, allowing developers to avoid duplicating common code. This mod is part of The Cosmos Series by TheCosmicNebula and is required […]
VapourWare Mod (1.21.1, 1.20.1) – Library for VapourDrive's Mods
VapourWare Mod is a base mod created by VapourDrive. It serves as the foundation for several other mods and includes shared code for fuel-powered machines and a wrench. Features: Provides the logic and framework for fuel consumption, storage, and use in various machines. Adds a wrench that can be used to rotate blocks and disassemble […]
Structurized Reborn Mod (1.21.1, 1.20.1) – Allows Adding Custom Structures
Structurized Reborn lets you add custom structures to villages and other jigsaw pools in Minecraft. This library provides tools to register new buildings, set their spawn weights, and control how they fit into the terrain. You can also apply generation processors to add details like random mossy cobblestone. Features: Adds custom structures to existing village […]
音符盒调教师NoteBlockTweaker
原版大型红石音乐的建造需要一次次地右击音符盒、一个方块一个方块地摆放延音电路，此模组专为解决这两个痛点而生。 Building large-scale redstone music in vanilla Minecraft requires right-clicking note blocks one by one and placing delay circuits block by block — this mod is designed to solve those two pain points.
AI DataBase wAPI Core
A core server-side mod for Minecraft 1.21.1 (NeoForge) that enables async external AI API calls and lightweight JSON-based data storage. It provides APIs for other mods and has no standalone features.
Database K's Dimension
The not so dependent dependency for my other Datapack that includes a simple dark dimension with no escape made of pure black concrete.
Adventure Item Stats
Gaussian variation on base stats of naturally-spawned items — every found sword and armor piece rolls a little different.
Simple Database
Save and get custom NBT data for Players
Gemini Live Library Mod (1.21.1, 1.20.1) – Hold Real Conversations
Gemini Live Library Mod provides websocket tools and helper functions to link Minecraft with the Gemini Live API. This mod handles background data traffic between the game client and external AI systems. Other mods rely on this base to run live conversations and smart dialogue with in-game characters. Features: Provides a built-in websocket client for […]
Veil Lib Mod (1.21.1) – Bring Custom Shaders and Fluid Animations to Life
Veil Lib Mod brings advanced rendering tools and modern graphic systems to Minecraft. It lets other mods create fluid animations, custom visual effects, and new shaders directly inside the game engine. This library serves as a shared technical base for projects that want to upgrade visual presentation and build bone-based entity animations. Features: Manages colors […]
Voidless Framework Mod (1.21.8, 1.20.1) – Shared Resources for Connected Mod
Voidless Framework Mod supplies shared assets and core resources for connected Minecraft projects. This mod prevents asset duplication across different add-ons by storing common items like alloys and cans in one central location. It serves as an essential base dependency that allows related mods to run properly in your game. Features: Provides shared base assets […]
LimaCore Mod (26.1.2, 1.21.1) – Essential Base Framework for the Lima Mod Series
LimaCore Mod supplies the central base code for the Lima series of mods. It provides shared tools, template classes, and background systems needed for related mods to run properly. The mod includes network syncing tools that keep block entities and custom menus working smoothly between the client and the server. Features: Serves as the core […]
ESC Extra Special Core Mod (1.21.1, 1.20.1) – Read Modded Menus with Crisp
ESC Extra Special Core Mod provides shared fonts and user interface building blocks for compatible mods in the Creatopia ecosystem. This library keeps text rendering clean and makes menus look uniform across different projects without adding clutter or extra gameplay items on its own. Features: Provides bundled font definitions like Fira Code, Monocraft, and Unifont […]
HazentouveLib Mod (1.21.1) – Cast Multi-School Spells with Ascended Armor
HazentouveLib Mod provides shared magic systems, spell schools, and equipment classes for addon mods. It acts as a core base that adds shared templates for spellcasting mobs, multi-school armor sets, and magical weapons. Other addons rely on this framework to run smoothly and share spell mechanics across different modded worlds. Features: Includes three core spell […]
Markdown Manual Mod (1.21.11, 1.20.1) – Read Clean Mod Guides Directly
Markdown Manual Mod provides an in-game manual framework powered by Markdown text formatting. This tool serves as a shared library for other mods that need readable in-game guides and item documentation. It gives guidebooks a clean base layout while letting other projects restyle the screens completely to fit custom themes. The system runs behind the […]
Iguana Lib Mod (1.21.1, 1.20.1) – Power Custom Camera Views and In-Game Visuals
Iguana Lib Mod provides core utilities to control player visuals and custom in-game effects. It works in the background to manage player view settings and render special visual elements. Other dependent mods rely on this base library to run their visual features properly without extra setup. Features: Provides utilities to control player visuals and camera […]
Better Library Mod (26.2, 1.21.1) – Adds Custom Player Join Messages
Better Library Mod manages shared systems to help other mods run properly. It acts as a base file that lets creators add setting menus and custom text to their games. You will need this file to play the Better Villagers mod. Features: Core for Better Villagers: This file is required to make the Better Villagers […]
Tesseract API Mod (26.1.2, 1.21.1) – Registering Blocks, Items, and Fluids
Tesseract API Mod provides a hook framework and API, specifically for developing addons for Modern Industrialization. It also includes convenient helpers for registering blocks, items, and fluids, as well as offering some extra events to enhance the development experience. With Tesseract, developers can streamline their modding process and focus on building amazing new features. Features: […]
Citadel Unofficial Port Mod (1.21.1) – Play Alex's Mobs On Newer Game Versions
Citadel Unofficial Port Mod updates the main Citadel library to run on newer Minecraft versions using NeoForge. This library acts as a base requirement that helps other popular mods load properly in the game. Features: Acts as a lightweight background library that other mods need to run. Updates the original code to work smoothly on […]
NukaTeams Gun Lib Mod (1.21.1, 1.20.1) – Unleash Modern Firepower
NukaTeams Gun Lib Mod provides a powerful library for adding animated weapons to Minecraft. This mod acts as a base for other gun mods, allowing them to introduce things like firearms, melee weapons, and throwables. It supports custom gun packs, which let you add new weapons or edit existing ones. This mod itself does not […]
Iron's Patreon Library Mod (1.21.1, 1.20.1) – Framework For Armor And Statue Systems
Iron's Patreon Library Mod provides a Patreon integration API along with shared systems and base content for related mods. It includes frameworks for armor transmog, player statues and decorative multiblock structures. Features: Library mod providing a Patreon Integration API layer Includes base content for dependent mods Adds Transmog Table block Provides Armor Transmog Framework Adds […]
SunDB
Lightweight async database library for Paper/Folia/Velocity.