Minecraft Java 1.21 Mods
Browse 97 free mods for Minecraft Java 1.21 — popular picks include SIR, Iron AI, PolyTech.
Updated daily
SIR
A simple chat plugin that have a lot of functions to customize your server.
Iron AI
A customizable AI chat assistant for Minecraft that can learn words, respond to messages, and be taught new responses with simple commands like /ironai teach
PolyTech
a server-side tech and automation mod for Minecraft 1.21.11, built on the Fabric API using Polymer. It introduces a comprehensive energy network and a suite of machines designed to process resources and automate crafting.
Tome of Echoes
There's no better method of storing and placing blocks!
Tom's Loot
This modpack adds a variety of loot tables and can be used by other mod developers for structure mods and other mods with loot tables as a basis.
Takion
Takion is a powerful Spigot library for advanced chat, text formatting, and messaging utilities in Minecraft plugins.
Easy Bee
A completly new way to trasport bees with extra tweaks
Advanced API
AdvancedAPI provides very simple code, for example, ItemBuilder or SimpleInventory, which can be used to create things faster. ONLY FOR PLUGIN DEVELOPERS
Idle Generators
Place a generator and let it work, even offline. Craftable block-generators that produce resources passively over real time, with a live HUD and full Cloth Config support.
Sound Manager
This is the mod for usually used for muting or changing the voice of the mobs,blocks or generall things like death, fall damage , hit etc. You can edit them customly see images for more info
kAuth
Auth System for Velocity servers
Polydex2REI-Forked
Converts Polydex recipes to work with REI!
Econix
Lightweight Economy Provider for Minecraft Server and Developer
MHDF-Tools
MHDF-Tools | Dream Tools | ✨ A lightweight portable high performance Bukkit base plugin ✨MHDF-Tools | 梦之工具 | ✨一款轻量化便携高性能的Bukkit基础插件✨
StatsSigns
StatsSigns expands StatsMod to sign displaying
Espoir SMP
The plugin's twist is ⚙️ How the system works: 🧿 You start with 3 souls. 🔻 Each time you die, you lose a soul. 💀 At 0 souls, you become a ghost: spectator mode for 24 hours. ⚔️ Kill a player → you steal one of their souls, if you don't already have all
ISS
This Datapack adds an easy way Save and Load player inventories.
QoL
(1.21.5+), Adds Quality of Life features that everyone needs in their Survival worlds/servers (will also include some of my other datapacks/mods in here)
VanishV
VanishV - this is an improved version of the regular vanish, convenient and simple
Delphi Entity Menus
Make menus with XML, style with CSS and add functionality with either Java or JavaScript. All rendered with Display Entities
PrismaticAPI
Versatile library for advanced color manipulation and text formatting in Bukkit/Spigot/Paper plugins.
RemooLogin
A lightweight Minecraft plugin for offline servers that requires players to register and log in before interacting.
P_Terrenos
Terrenos Customizados Custom lands
CorruptionCraft
A plugin that challenges players. Random events can occur. (no Spoilers!)
Tiny DataLib
This project is a library with useful utilities such as a database system and more.
Command Framework
Dynamic command framework for Bukkit, Spigot, and Paper plugins.
WingAuth
A more advanced and updated fork of LimboAuth - Velocity auth plugin for offline/hybrid servers with secure Limbo-based login, sessions, and anti-bruteforce protection.
Aran's Discord Presence
A lightweight, customizable Discord Rich Presence mod for Fabric. Features a built-in settings menu to toggle Server IP, biomes, dimensions, and player heads on your Discord status.
Sellmenu
Plugin for creating stores for your server Easy to use plugin supports itemadder itemedit itemtag plugins Must have vault
MultiblockEngine
An advanced multi-block structure system
CyberWorldReset
Easily reset a world with a scheduler or a specific time/date and more!
P_Caixas
Caixas customizadas Custom boxes
VirtualFilter
Professional Independent Virtual Filtering System
CrossTPA
CrossTPA is a high-performance, cross-platform teleportation suite that seamlessly bridges the gap between Java and Bedrock players with interactive GUIs and robust economy integration.
AwesomeToDos
Create good looking and structured ToDo-Lists and various categories.
Orbinomy
Orbinomy redefines Minecraft economy (1.8-1.21.11) with in-game shop/sell editors, dynamic enchanted pricing, VIP multipliers, Discord logging, and cloud sync—zero config files needed.