Minecraft Java 1.21 Mods
Browse 3,588 free mods for Minecraft Java 1.21 — popular picks include MythicItemGui-A mythical item library based on Gui display, Jsonite Modded Resource pack example, NoxaFrame.
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MythicItemGui-A mythical item library based on Gui display
A mythical item library based on Gui display
Jsonite Modded Resource pack example
Example Resource pack for Jsonite Mod library

NoxaFrame
lightweight UI-framework for NeoForge
Bento GUI
The expressive GUI library from Bento Box
Research Tree
A Research Tree mod for all of your needs. Supports many things and is fully data-driven!
Invite System
Whitelist plugin with collective responsibility. Banning an invitee penalizes the inviter. Low trust scores result in automatic unwhitelisting. LuckPerms and MySQL/YAML supported. Has a reputation system.
Shadi Smith
Adds a new smithing recipe type that applies enchanting.
NightEconomy
Economy Mod, Create as many currencies as you want
Spis Ui Api
Library mod that adds easy to use UI elements like Custom Fonts or animated textures
Bento Config
The declarative config library from Bento Box
Revival Shrine & Lives System
Every player gets 10 lives. Lose them all and you're stuck in spectator mode — unless your friends build a shrine to bring you back.
Open Assets Lib
This Library contains many open source assets, that are free to use in other creators' projects.
MCBoard
Panel up, No setup.
Contents Director
Runtime mod and file installer for Minecraft modpacks.
MatchMaking
A framework for organizing team PvP matches with flag capture, custom kits, — all configurable in-game without editing files.
Open And Close Non Player Inventories
you can now detect opening and closing inventories with this datapack!
Flying Mount Library
A development library mod to help easily create flying mounts.
ikbLib
An API for density functions that use the world seed, voronoi/cellular noise, and new fluid behaviors
Giant Attribute Tweak
Changes the Giant Mob attribute to make it compatible with mods that adds IA
Hero's Lib
A library for a couple mods made by Herobrot.
PvP Framework
A framework for creating PvP games
JS Runner
The plugin aims to add the ability to run JavaScript files in a Minecraft server.
MapProtect
MapProtect is built to work alongside automated map rotation systems, allowing FFA servers to maintain clean, reusable arenas without requiring manual resets.
Chest Door Lock
Lock is a lightweight and multiplayer-friendly Minecraft datapack that allows you to easily secure your items and structures.
ManaMod Nixsas
Requires Minecraft 1.21.1, Fabric API 1.21.1 and Fabric Installer of version. Mana System added, Ice/Lava Mana Upgrade, Swords, Armor, Bar's, Main R ability that enables you to walk on water or lava, special Sword ability's and much more, join discord.
FalchusLib
A library designed to simplify & speed up software development.
mqttlib
A Dependency for NeoForge Mods that require MQTT
AgnTpa
Advanced Tpa System / PTP System
Extender
Minecraft Command length Extender & Minecraft Custom Function Runner.

Chroma
A Collection of code commonly used in Nitron's heavily rendering focused mods.
C-erva Core
Shared Fabric library providing text, registry, networking, inventory and permission utilities for AndrewImm mods.
RoseLand SoundPad
Ru: Дополнение, обеспечивающее совместимость с модом Rose Voice и Rose Voice Sound Pad. Eng: An add-on that provides compatibility with the Rose Voice mod and Rose Voice Sound Pad.
VoxelUI
Modern UI framework for Minecraft NeoForge with XML layouts, MCSS styling, reusable components, theming, and developer tooling.
Bento Util
The general utility library from Bento Box
Nutlet
A Datapack API that focus on creating Multi-block Machines. It provides schematic displays, simple enhanced /schedule, utilities for handling block orientation, UUID conversion, in‑game adjustable setting.
Ponder lib
give datapacks the abbility to add ponder pages (like in create mod) to items with the new dialogs in 1.21.6