Minecraft Java 1.21 Mods
Browse 197 free mods for Minecraft Java 1.21 — popular picks include Redstone Additions, Hopplet (Hopper Filters), PySpigot.
Updated daily
Redstone Additions
Best redstone&tech datapack, Super optimized, 55+ blocks (Block breaker, block placer, filters, conveyors, item pipes, breeder, generators, gates, chunk loader, wireless redstone, multiblocks, jetpacks and so much more ! )
Hopplet (Hopper Filters)
Expressive hopper filtering, written as plain text. The most powerful plugin in this domain. Filter by any item property. Extendable via a strong developer API.
PySpigot
A Python scripting engine (plugin) for Minecraft servers running Bukkit or one of its forks (Spigot, Paper, etc.).
Clutch
In some cases a clutch will be impossible. This mod shows whether a clutch is doable and how difficult it will be, alongside many other clutching utilities.
Replant+
A lightweight and server-friendly mod that automatically replants crops the moment you harvest them.
Customizable Dragon AI
Useful Datapack to customize the Ender Dragon's AI
OpenJavascript
Create custom menus, commands, plugins, systems, basically anything with scripts in Javascript! With multithreading and Folia support! Everything is fully documented in the documentation!
ManualTotem
A simple mod that helps with manual totem placement by automatically moving your cursor to a totem when you open your inventory.
RankPlugin
RankPlugin shows player ranks as PNG icons from a resource pack in both chat and the tab list, with easy configuration via ranks.yml, commands, and GUI.
Draventh Ores
⚒ Advanced Tier Ores & Equipment This mod expands Minecraft’s survival progression by introducing 15 new late-game materials, each with full armor and tool sets. The goal of this mod is simple: Extend progression beyond Diamond and Netherite with a struc
Money SMP
💰 Money SMP: Lightweight PvP economy, no jobs, just combat. ⚔️
More Villages Datapack
Adds more villages to the game.
StatsMod
Track many Stats for your players
Media HUD
Media HUD is a client-side Fabric mod that adds a draggable media player HUD to Minecraft Java Edition. It supports local audio and video playback from disk, library browsing, saved HUD position, full and compact layouts and multiple visualization modes.
Kappa's AntiCheat
A lightweight Fabric anti-cheat designed for high performance on large-scale servers.
mcs_permissions
Server Essentials, but for vanilla minecraft made in datapack format.
RMK`s The One Probe Addon
The One Probe addon for different mods
CrashPanel | CrashCore
The ultimate No-Code engine. Elevate your server with hot-reload, node-based event scripting, plus full model and particle editors in one intuitive interface.
Fruitbridge
This mod contains Fruitbridging utilities to assist players. Features are designed for both the Distance and Java 12b leaderboards.
NoxesiumUtils
Communicate with The Noxesium Mod with ease.
Teleport Mod
Force Teleport Players: Cannot teleport others to you or third parties coordinates/players Permission Tiers: No external permission plugin dependency (all players enabled by default)
CC: VR
CC: Tweaked x Vivecraft Addon
midi
A lightweight Minecraft mod for sending MIDI-like actions from the client to the server via custom plugin messages.
Lag Detective
Lag Detective is a lightweight diagnostics mod that helps answer where the lag is coming from.
Cauldron API
this mod is an api that allows mod creators to create multiple type of recipe that base on cauldron!
ItemDisplayPlugin
This plugin allows the collection of items dropped within a 5-block radius in Minecraft, merging the items with the same type and displaying their quantity in the item’s custom name. Items that cannot be stacked, such as enchanted equipment (e.g., swords,
MekaMod
Adds New Stuff to Mekanism: Automation
Simple Voice Chat Player Voice Recorder (Server-Side)
SimpleVoiceChat Player Voice Recorder (Server-Side) Record Minecraft players’ voice chats on the server using the official Simple Voice Chat API. Saves decoded audio in timestamped files organized by player UUID. Reliable, efficient, and easy to use.
G1axFixer
G1axFixer is a client-side Fabric mod that fixes resource pack crashes and optimizes network, rendering, and ticking for maximum FPS and smooth combat.
EmakiCoreLib | Shared Runtime for the Emaki Series
One pipeline syntax, one item-source identity and one pre-check for every Emaki module.
Mini Block Miners
All updated Mini Block Miner Farms!
RevertRaidChanges-Pro
Restored Raid to the logic before version 1.21. Allows most professional Raid Farms to function.
GuardianAc++
Enterprise anti-cheat for 10k+ players. 12 detection modules, real-time monitoring, Discord integration, zero vulnerabilities. Professional-grade protection with dynamic scaling.
VelocityNavigator
The all-in-one Velocity network solution for intelligent lobby routing, parties, queues, Java and Bedrock menus, server management, Redis sync, failover, and live monitoring.
Bodebojo's AFK Display
Datapack that shows when people are AFK
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