Minecraft Java 1.21 Mods
Browse 1,389 free mods for Minecraft Java 1.21 — popular picks include Chaos Engine, NetworkStorage, PluginPilot.
Updated daily
Chaos Engine
Chaos Engine adds events to the server (UFO, meteorite, glitch events, and others), custom enchantments, and careers. The plugin also includes a weapon system, cases, a casino, and much more!
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 :)
Portable allays
A mod improving the portability of allays
MonsterCore (Fabric)
Monster Core is a client-friendly and server-friendly economy mod that replaces diamond and netherite trading with a scalable, farm-based system built around mob drops and player-to-player exchanges.
ReddishTheBest's Survival Additions | RSA
Datapack with a few survival-centered additions. Crafting Table+, Multi-Tool, Diver's Helmet with more to come!
VoidVaults
A lightweight modern Folia dual-mode vault with Sorting, Searching, and Quick Deposit. 100% Free and Open Source.
Survival Magnet's
Add two new magnets to the game.
MobCap HUD
MobCap HUD is a lightweight client side Fabric mod for popular Minecraft Fabric versions. In singleplayer, it renders a compact overlay showing each spawn group's current population, calculated mob cap, and percentage fullness. The HUD is useful for check
PostMaster
A lightweight and powerful mailbox plugin for Paper/Folia servers
Moral Claims
Modern plugin for privatization of territories
Conquest Online
The "Conquest Online" Mod is part of the "Soncresity: Conquest Online" Modpack and also part of the Soncresity Universe.
Join Leave Message Customizer
Custom Join, Leave messages. And adds private message. Simple plugin
Super Farming
the hoe isn't a no useful tools now!
Uptowns Extra Inventory
This plugin adds extra inventory with 54 slots under command /inv. Has a config
Netherite Shulker Box
Adds Fire Resistant Shulker Boxes to Minecraft.
OpenChestSorter
Automatically sort chest contents when players open chests on Paper servers.
Schneckenhaus
Ever wanted to see how a chest looks from the inside? Ever wanted to take your buildings with you in your inventory?
Advanced Diamonds
A vanilla friendly, open-source mod that adds in more tiers of Diamonds
NewNBetterLoot
More and Better Loot from vanilla mobs. A datapack that adds drops from mobs that did not have it and greatly complements the existing loot.
SimpleHomePlus
SimpleHomes is a fast and modern Minecraft homes plugin with GUI support, trust sharing, /back, public/private homes, and MySQL/SQLite/local storage — perfect for SMP servers.
Portable_Workstations
Right-click workstation items in your inventory to open their GUIs — no block placement required.
![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
Blastproof Copper
One-mixin mod that makes copper chests blastproof.
VaultCrates
A feature-rich, fully animated crate plugin for Paper 1.21.x with IA, Vault, PlaceholderAPI and Citizens support
AutoFeedShulker
Automatically feed players using a special shulker.
BadDuperNoTNT
Prevents containers from being broken while in use, preventing the TNT Chest dupe and other related container content dupes.
Sellmenu
Plugin for creating stores for your server Easy to use plugin supports itemadder itemedit itemtag plugins Must have vault
Battle Buddy
Battle Buddy creates a loyal companion that follows, fights hostiles, uses gear smartly, and stores your items.
CityClaim
The new claim minecraft plugin free ! Create your town/city, claim, custom gui, bank and more !
TickTally
Track your true Minecraft playtime across worlds and servers with clean, automatic tracking and zero fluff. TickTally keeps it simple, accurate, and entirely under your control
ShulkerBox Limit
ShulkerBoxLimit is a plugin that allows Minecraft server administrators to set a limit on the number of shulker boxes that players can carry in their inventory.
CyberWorldReset
Easily reset a world with a scheduler or a specific time/date and more!
Crystal Caves 2
Crystal Caves 2.0 adds a new line of crystal tools, armor, and blocks to Minecraft. This is an early version of the mod, and more blocks will be added in the future.
Enchanced backpacks
Enhanced Backpacks is a new take on backpacks in Minecraft. Instead of providing free extra inventory early on, this mod introduces weight-based and immersive mechanics.
redstone-structure-block
A Fabric mod that allows saving structures to disk (permanent storage) instead of memory when triggering structure blocks with redstone.