Minecraft Java 1.21 Mods
Browse 1,939 free mods for Minecraft Java 1.21 — popular picks include Cauldron Optimization│煉藥鍋優化, Thoughtful Recipes, BindAlias.
Updated daily
Cauldron Optimization│煉藥鍋優化
The liquid inside the Cauldron will remain after the Cauldron is destroyed.│煉藥鍋內的液體會在煉藥鍋被摧毀後會保留。
Thoughtful Recipes
Not just your avarage recipe tweaks datapack.
BindAlias
be like cfg pro in counter strike
Copper Wiring
Lightning Rods can function as electrical wires, transferring power in ways Redstone cannot! Circuitry has been transformed!
R.I.P. - Renamed Items Persist
Renaming items prevent them from despawning
One Player Sleep Server Mod
The best multiplayer sleep mod. (This mod does not use custom sleep percentage)
Dyeable Saplings
Dye any sapling into a specific tree type.
JSCore
Extend your game with JavaScript, create and publish commands, menus, toggles and much more!
Double Doors Server
A Bukkit/Spigot plugin that opens mirrored double doors together, with low-latency syncing and optional compatibility handling for common server stacks.
Tenbees crystal optimizer
A lightweight Fabric mod that optimizes Crystal PvP for smoother, faster, and more responsive gameplay. Featuring intelligent packet optimization, client-side prediction, and customizable settings to enhance your PvP experience.
Projectile Fix
Fast moving Projectiles in Minecraft dont display correctly on the client. this mod fixes that.
ChunkSee
A mod that adds a keybind to see chunk borders in minecraft.
ChunkyFast
ChunkyFast is a high-performance chunk pregenerator for Paper 1.21.x. It provides a clean, predictable workflow for pregenerating terrain, supports running multiple world jobs in parallel, and includes built-in scheduling and load control.
AtomGuard
🛡️ Advanced Minecraft Server Security & Exploit Protection — No scam unlike other plugins this one works fr.
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.
RedoxKits
Redox Kits is the ultimate kits plugin for Practice servers. It's specially optimized and includes a wide range of customization options. This public plugin offers a kit layout editor.
Kappa's AntiCheat
A lightweight Fabric anti-cheat designed for high performance on large-scale servers.
PrxjX's Xp Optimizer
PrxjX's Xp Optimizer lets you automatically throw Experience Bottles by simply holding down your use button instead of repeatedly clicking.
IPGuard
Raise the protection of your players one more level on your server!
brain
A Minecraft mod that disables spawn chunks to improve world loading performance.
NotchArrowUtils
An All-In-One Fabric Utility mod for the latest Minecraft versions.
Delta-calc
DeltaCalc is a client-side utility mod for Cobblemon Delta that adds an in-battle damage calculator, expanded battle overlays, richer tooltips, and team indicators. It helps players read battle state faster and make better decisions without changing Cobble
Gamemodes
Making gamemode swapping quicker and easier. Short gamemode swapping commands & ability to lock gamemodes. E.g: /gmc
![AntiRedstone| Advanced Redstone Lag Prevention [1.18 - 1.21.4]](https://pub-2ae937f770284535a96c3330f91236aa.r2.dev/thumb/modrinth/149097.webp)
AntiRedstone| Advanced Redstone Lag Prevention [1.18 - 1.21.4]
A performance-friendly plugin that blocks all redstone activity on your server and reports coordinates of redstone spam attempts.
More Trapdoors!
This datapack improves trapdoor crafting by making each recipe yield 6 trapdoors instead of 2. Now you get more value from your wood, making it easier to build and decorate!
Improved Shield
A mod that improves shield usability
Enhanced Hoes
Hoes can mine more blocks!
Vanilla Essentials: Technical Tools
A mod that adds useful tools for technical players, command block users, and mapmakers.
Translucent Lava
simple mod which makes lava look like water
Androidium
A lightweight optimization pack designed to reach a great amound of FPS on phones.
CobbleSpawnRegions
This mod adds region based custom cobblemon spawning
Yarnwrap
Library for runtime deobfuscation of Minecraft, used by scripting runtimes.
TeamErrorFix
A mod to fix the player either on another team or not on any team error
SG Unlimited Trades
A simple mod to reset trades when open the gui of a villager
Prism's KeyStrokes
A fully customizable and animated keystrokes HUD that displays your keyboard and mouse inputs in real time for Minecraft PvP, recordings, and gameplay tracking.
Client Guard
Blacklist certain mods such as Freecam, hack clients, etc. The only plugin that allows for kicking players with selected mods without a client-side mod.