Minecraft Java 1.21 Mods
Browse 3,587 free mods for Minecraft Java 1.21 — popular picks include Player Steps Recorder, EntityDB, KrepAPI (Plugin).
Updated daily
Player Steps Recorder
Player Steps Recorder is a datapack library that adds recordings into minecraft
EntityDB
Store arbitrary NBT data for any entity
KrepAPI (Plugin)
Run server commands when a player presses a key- configured in a simple YAML file, no programming required.
ErebusHeads
get all and any ones head/skull! simply type /eh <players name>
Just Enough Mods: Calamitous
A dependency and content mod for the Just Enough Mods modpack.
Territory API
API for creating and managing in-world regions with efficient tracking, persistent storage, and simple enter/exit/tick events for gameplay mechanics like zones, arenas, and protected areas
Flavor Framework
A lightweight mod that adds various foods to the game.
VertexCore
Lightweight core plugin for Paper servers providing config, database and command infrastructure for plugin developers.
XzeelCore
A library plugin used by XzeelArcadia's plugins to function.
ZeresClient
Mod ZeresClient for Server Minecraft
RTN's Economy Library
Server-side economy library with rewards for killing mobs, kill combos, top lists and a developer API. Vault-style economy for mods in Minecraft.
Econics
Econics adds a flexible multi-currency system to your Minecraft server. Create custom currencies with MySQL/SQLite support and a simple developer API.
OmniMixin
A compleate overhaul of Mixins. If you hate Mixins this will help you
DialogAuth
Lightweight minecraft auth plugin with DialogAPI support
PaperActions
This Plugin adds a Small API System to Paper called Actions. This allows Plugin developers to integrate Actions that Other Plugins can use without knowing what it does
Voidcantation
This mod is made using fabric api and tested for minecraft version 1.21. It adds three unique items to the game, the void pocket, the phase dagger and the architects compass that adds some unique elements to the game.

Really Cooking
Cooking in Minecraft has always been simple, but not anymore!
Binding Agent
A library mod for some useful cross platform utilities.
simpleObjects
Mod add-on for Container Core.
Enemy Tracker
Time to Detect the Threat and Enemies!
Loop Lib
Adds easy looping to Minecraft datapacks
Master Crafting
This datapack unlock uncraftable items in the game and add some old recepies like enchanted golden apple
Custom Entity API
A datapack API allowing anyone to add custom entities, or bosses, to Minecraft: Java Edition, powered by Animated Java.
[1.21.4 – 26.2] Quality Control - CORE ⭐ Dependency for Quality Control Plugins ⭐
QCCore is the shared engine every Quality Control plugin runs on.
Recipegraph
RecipeGraph is a recipe scanning and exporting mod for Minecraft. It can scan all recipe data from JEI in game through commands, then export the data as a JSON graph. The exported JSON can be searched and viewed with the bundled index.html.
ClickPoint
A data-driven GUI mod that supports native gif rendering and designed to be intuitive and approachable.
FlatScript
A simple, no-indent scripting language for Minecraft servers. Write commands, events, GUIs, NBT data, and more without complex syntax.
KNLibs
KNLibs is a lightweight, high-performance core library required for all KN Projects plugins.
TotemGuard
TotemGuard is a lightweight client-side Fabric mod for Minecraft 1.21.4 that blocks non-totem items from being placed in your offhand slot, with optional sound and chat notification. Includes item highlighting and an in-game GUI.
ModularShoot
an attribute-driven, modularly-assembled gun system.
Player Utils
This Is A NeoForge mod for Minecraft 1.21.1 that adds utility commands for server administration.

multiaxisrot
Backports 25w46a multi axis block/item model element rotation to 1.21.1, so resource packs built for newer Minecraft versions.
Data Command
Custom commands with just datapacks using this api.
NovaRelics
NovaRelics is the most powerful and flexible custom item framework for Paper Minecraft servers.
InfinityCore
Library used in InfinityGroup Plugins for compatibility and optimization development.
E-Manager-EF
√一个简单、有用的防炸插件,可以帮助服务器防止几乎任何形式的爆炸物爆炸,并且记录爆炸的地点、物品和引爆人(放置人) √ A simple and effective anti-explosion plugin that helps servers prevent nearly all forms of explosive detonations, while recording the location, items, and detonator (placer) of explosions