Minecraft Java 1.21 Mods
Browse 1,917 free mods for Minecraft Java 1.21 — popular picks include Warp Hopper, LBSpawners, cblocker.
Updated daily
Warp Hopper
Boost server performance by swapping tangled hopper lines for sleek, wireless item routing. Eliminate lag‑filled storage rooms and embrace invisible, high‑efficiency logistics.
LBSpawners
Advanced stacked spawners
cblocker
CommandBlocker blocks all commands by default and lets you whitelist specific ones based on user groups – giving you full control and a clean, organized command list
No Bullying
A lightweight plugin that prevents mob swarms by limiting how many mobs can target a player at once.
logCrafting
Mathematically accurate crafting with logs (logs to sticks, etc...)
Custom Boss Zoryth AI
Zoryth AI Boss is a premium, high-performance custom boss framework for Paper (1.21.x).
PixelAI
PixelAI is a lightweight, high-performance AI integration that allows players to interact with state-of-the-art AI models directly in-game. Whether you need an assistant for all your server features or a witty global chatbot to entertain your community!
BetterSensi
This mod allows you to put decimal values as Minecraft's sensitivity through some Minecraft commands.
Server Side Health Indicators Datapack
A small customisable datapack that displays health on tablist and above the player.
nearest-villager
Nearest Villager Job: Automatically assigns workstations to the closest villager and lets you highlight owners with a sneak-right-click. Optimized for Paper/Spigot 1.21.1+.
CraftCorePL
All-in-one utility plugin with TPA, homes, warps, /back, fly, god mode and more — fully configurable in English & German.
AeroHook
A high-performance, anti-cheat safe grappling hook plugin with realistic vector physics and full customization.
Improved Structures & Dungeons
The combination of all minecraft Structure & Dungeons Data Pack
Redstone Counter
Counts redstone components within a chunk, configurable Blocks in Config. Compares against a maximum allowed number.
CBC Loot Fix
This is a simple fix for the Create Big Cannons: Advanced Technologies addon. Previously, some blocks simply disappeared when broken; this datapack fixes that bug and restores the correct drops.
Uncrafting_dp
Now it is possible to disassemble items to recover resources
PNode
Paper plugin with intuitive visual node-based editor for server logic. No coding required.
ScoreBoost
Scoreboard score batch synchronization optimization mod — Fabric / NeoForge / Forge
Entity Block
Adds the Entity Block to make creating custom structures easier
EntryCode
Secure your server with customizable entry codes!
世界存档优化器(自动异步保存)
世界存档优化器，可以自动保存您的服务器世界，采用异步保存。World Archive Optimizer, can automatically save your server world using asynchronous saving. Bukkit 1.21
rRestart
rRestart is a lightweight and reliable plugin for automatically or manually restarting a Minecraft server without losing data and with other players.
Unobtainable Crafting
Adds crafting recipes for items that seem like they should be craftable but aren't
WorldPreventer
Prevents your Worlds from being downloaded
FrpPlugin - Minecraft服务器内网穿透插件
FrpPlugin is a Bukkit plugin for Minecraft servers that facilitates intranet penetration by integrating with the frp client. This plugin offers features such as automatic downloads and updates of the frpc client, mirror acceleration for faster downloads, s
Trident Channeling Enhanced（三叉戟引雷增强 ）
Channeling up to Lv.5 with a chance of non-thunderstorm lightning & chain damage. Adds "Trident Shot" for Crossbows to fire powerful Tridents. 引雷上限至 5 级，支持非雷雨天概率落雷与连锁闪电。新增“海神之引”附魔，使弩能发射高伤三叉戟。
VirtualFilter
Professional Independent Virtual Filtering System
iClearLag
The best Minecraft cleaner, fully customizable
Boxduel
Advanced Duel system specially optimized for BoxPvP and BoxMining servers with high-performance kits. (just for Turkiye.)
ElevatorPro
The ultimate high-performance, survival-friendly vertical transport solution.
ManageAFK
with this PLUGIN you can customize the AFK in your server with style and with lots of features and optimization for no performance issues.
CREEPER ANTI LAG
Advanced anti-lag plugin featuring TNT protection, intelligent item cleanup, mob optimization, lag machine detection, and real-time TPS monitoring.
Durability Minus
A simple mod that adds declining equipment performance based on durability
Mineplus Visuals
Usually, everything is a bit stiff and robotic, but Mineplus Visuals changes that. It makes the world look like a cinematic movie while actually making it run smoother than the basic game.
Just Auth
Just Auth and a little performance
Command Block Spy
[Open Source] Monitor/Intercept Server Command Block