Minecraft Java 1.21 Mods
Browse 139 free mods for Minecraft Java 1.21 — popular picks include Conium, Yarnwrap, Kappa's AntiCheat.
Updated daily
Conium
Conium is a datapack and script framework for modern Minecraft, it provides very diverse features without Java coding, Conium lets you complete your mods only using datapacks.
Yarnwrap
Library for runtime deobfuscation of Minecraft, used by scripting runtimes.
Kappa's AntiCheat
A lightweight Fabric anti-cheat designed for high performance on large-scale servers.
GlobalMarketplace – Auction | Geyser Support
Cross-server Auction House for Paper with anti-dupe, Vault economy, and Discord support.
Fruitbridge
This mod contains Fruitbridging utilities to assist players. Features are designed for both the Distance and Java 12b leaderboards.
BetterReset
Minecraft plugin that lets you safely reset a world’s Overworld, Nether, and End while the server is running, with player protection, async deletion, and full regeneration in one command or GUI.
Sinytra Connector Crash Fix
Fixes crash in Sinytra Connector
Lag Detective
Lag Detective is a lightweight diagnostics mod that helps answer where the lag is coming from.
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,
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.
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.
Umbraix Jobs
A modern, feature-rich jobs plugin for Minecraft servers, offering customizable careers, dynamic missions, team play, and a sleek GUI—built for performance and player engagement.
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.
Orcore (discontinued)
The Core mod for ItsOriginal's (and other's) mods.
Deltatime
Keep track of the real time even on laggy servers (uses the worldborder method)
Pix Vulka Optimizations
⚠️【警告】 请手动安装VulkanMod Android支持库模组后再运行，否则会立即崩溃。 ⚠️[Warning] Please manually install the VulkanMod Android support library mod before running, otherwise it will crash immediately.
FoliaCore
A complete essentials suite rewrite designed explicitly for regionized servers. Runs warp, spawn, utility commands, and chat visual frameworks asynchronously.
PacketEventsSK
A skript addon adding packet related features to Skript.
Auto Logout
A mod that automatically kicks yourself from server once a player gets in range of blocks that u set, allows u to afk farm and play safe.
APEL
Apel stands for Animative Particle Engine Library and is used for complex particle animations, all without the need to major in linear algebra. It provides a straightforward interface and rich in documentation for developers.
ChristCraft
Removes magic and spiritism where possible.
RevertRaidChanges-Extra-BadOmen
allows you to obtain BadOmen after killing raid captain, just like before version 1.21.
Easy Bee
A completly new way to trasport bees with extra tweaks
Prism Perms
Cross‑platform permissions plugin for Bukkit, BungeeCord, and Velocity. Lightweight YAML storage, simple commands, and rich stats tools (groups/users, ungrouped/missing/list, names cache) with pagination and safe output chunking.
Capix!
A small API mod that allows Mod Developers to add capes to their mods
Advanced API
AdvancedAPI provides very simple code, for example, ItemBuilder or SimpleInventory, which can be used to create things faster. ONLY FOR PLUGIN DEVELOPERS
OptiFoundry
Optimize chunks, entities, and ticks
CoffeeProxy
This mod allows joining Minecraft servers via a SOCKS/HTTPS proxy (Fabric)
Visual HUD
A clean, fully customizable client-side HUD overlay for Minecraft 1.21.11 Fabric — shows coordinates, FPS, biome, time, direction, light level, speed, day count, dimension, compass, and FPS sparkline with an in-game config screen.
Easy Freezing
A mod that allows you to Freeze Time around you at will! Try with multiplayer and things get confusing fast!
PlayerSettingChanger
PlayerSettingChanger lets you customize how online players look, sound, and appear on your client with per-player nicknames, skin URL overrides, voice mutes, and a premium themed GUI.
Polydex2REI-Forked
Converts Polydex recipes to work with REI!
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✨
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
RewardsX
Turn Engagement into Rewards