Minecraft Java 1.21 Mods
Browse 434 free mods for Minecraft Java 1.21 — popular picks include Quantum Industry, OptiWorld, Magnus.
Updated daily
Quantum Industry
Quantum Industry is a lightweight, tech-focused Minecraft modpack built on NeoForge, combining powerful automation, energy systems, and digital storage with optimized performance for a smooth gameplay experience.
OptiWorld
OptiWorld automatically cleans old dropped items and collects experience orbs every 60 minutes. Smart protection keeps player-placed items and nearby drops safe. Zero lag, works on any server.
Magnus
A modular, high-performance, and resilient synchronization suite for Minecraft Fabric servers. Features real-time inventory sync, cross-server chat, and global player management.
MyTPA
Simple and balanced TPA.
Warfactory Ultimate Weight
Weight mod for minecraft that prioritizes compatibility and performance
PacketBooks
A simple plugin for fixing various book-based data overflow exploits by hiding the actual book contents unless the player actually needs to view them.
CorruptionCraft
A plugin that challenges players. Random events can occur. (no Spoilers!)
AnarchyCore-NextGen
It didn't work on some of stable Minecraft servers.
Enigma Storage
A compact terminal storage system for Minecraft servers, inspired by Applied Energistics 2 (AE2).
Inventory QOL
A modpack made for the best inventory management experience.
Instant Startup
Never want to close the server and when needed it's so short no one even gets annoyed!
Advanced Admin GUI Tool
Best Free Minecraft Gui Administration Tool Plugin
BackupGuard
AutoBackup is a high-performance automatic backup system designed specifically for Paper Minecraft servers
OmniPanel gui
OmniPanel is an advanced all-in-one Minecraft administration and server management plugin built for Paper and Spigot servers. It combines moderation, player management, anti-lag systems, staff tools, ranks, homes, RTP, security utilities, automation, and c
TitanLogin
This version includes platform update
Command Framework
Dynamic command framework for Bukkit, Spigot, and Paper plugins.
Everything
An all‑in‑one Minecraft server plugin 🛠 — bundling EVERYTHING into a single optimized jar.
EssentiaX-Legacy
Custom Minecraft commands, teleportation, AFK, mute, homes and more and fully customizable.
TheThanos
TheThanos is a Spigot,Paper,Purpur plugin that automatically deletes unused chunks to optimize server performance, with configurable settings and notifications.
XPMerge
This is a Folia-compatible plugin for Minecraft that merges nearby experience orbs into one to reduce lag.
Wolf's Enhanced Vanilla
performance and immersion, also includes world gen mods for exploration, the only new items are from the adventurers backpack mod and create. (= P.S. Also this pack works with Vivecraft, just disable first person model first
InventorySearchBar
A litte mod that add's a search bar in survival invetory to search for items
Trash-System
Trash-System is a Plugin, that allows Players to open a virtual Trash Bin.
InvBackup
Cross-version universal backpack snapshot, unaffected by UUID changes and data loss.
SmartSort
A Fabric 1.21.1 utility mod that automatically scans nearby storage containers (5-block radius) and sorts items into your hotbar using customizable profiles.
Compress Plus
Automatically compresses ores into blocks while you mine. Hold the Auto-Compressor in your offhand and watch as raw materials are instantly converted, perfect for box servers.
Ancient-Backup
A all-in-one backup system for your minecraft server!
BackpackPro
High-Performance Storage Solution
NetworkStorage
A Minecraft plugin that allows players to create a centralized storage network and share items easily.
PluginPilot
Download plugins directly from Modrinth,Hangar,SpigotMC while being ingame! Load,unload, debug all in one plugin itself :)
Noeforge Goublaglax
Immersive modpack with shaders, voice chat, vehicles, NPCs, backpacks, and decorative mods. Optimized for performance and balanced for solo or multiplayer.
VarnoShop
VarnoShop is the ultimate "Drop-and-Play" web marketplace for Minecraft servers. It features a fully embedded, high-performance web dashboard that runs directly from your server without requiring Node.js, external hosting, or complex setups. Players can s
GalacticChunks
GalacticChunks is a high-performance storage layer designed to reclaim your disk space and eliminate save-lag. By modernizing how Minecraft data is stored, we make your server faster and your backups smaller. 📦 Shrink Your World: Achieve 3–10× better comp
AutoFeedShulker
Automatically feed players using a special shulker.
![EssentialsY [🐛Alpha]](https://pub-2ae937f770284535a96c3330f91236aa.r2.dev/thumb/modrinth/158243.webp)
EssentialsY [🐛Alpha]
Death chests (Graves), combat log, RTP, Bounty, Item protect. An all-in-one plugin that adds multiple essential features inside one plugin
EcGlobal
A plugin for configuring and customizing Ender Chest: make it either shared for all or personalized for each player.