Minecraft Java 1.21 Mods
Browse 2,173 free mods for Minecraft Java 1.21 — popular picks include AntiRedstone| Advanced Redstone Lag Prevention [1.18 - 1.21.4], MOTCraft server, Advanced Optimized.
Updated daily
![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.
MOTCraft server
MOTCraft has tech, magic, and shaders with mods to help performance
Advanced Optimized
Advanced Optimized, a mix of Simple Optimized and Fabulously Optimized. Advanced Optimized is designed for Low - High End PCs to make the game better. Problem with your FPS? Advanced Optimzed has an solution. Start now using Advanced Optimized.
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.
FrenchCube
FrenchCube is a modpack for the server of the same name which combines creation, factory, optimization, and exploration.
Glow Mekanism Ores
Since other MEK glowing ores resource packs fail to work as expected, a new pack compatible with Optifine or Continuity has been recreated.
Kappa's AntiCheat
A lightweight Fabric anti-cheat designed for high performance on large-scale servers.
Everyday and Sometimes
A slice-of-life experience modpack that never grows stale. With a constant stream of updates, you'll always find new adventures and challenges to enjoy. Build, farm, explore, and create as you shape your own unique world.
QWERTZ Core
QWERTZ Core is an all-in-one event management plugin for Minecraft servers.
RTX ON AETHER
An astonishing collaboration between the Aether mod and RTX ON. This will majorly enhance your Aether experience!
LenkPack
A collection of mods for Storage, Automation and Performance
Essential Core - Inspect Blocks/Entities/Chunks/Players
Essential Core is an effective mod for server security. Restore inventories, chunks, inspect blocks, entities, etc., and enjoy advanced logs.
Sepd_Kits
A Better Kits Plugin For Your Server
FPS Miner
FPS Miner - Boost Your Minecraft Performance!
Map Making Modpack
A modpack to enhance map/datapack making experience
Shacknews Modpack
A collection of excellent Fabric mods for a enhanced vanilla experience, used on the Shacknews SMP community server. This modpack is no longer being updated.
Gamemodes
Making gamemode swapping quicker and easier. Short gamemode swapping commands & ability to lock gamemodes. E.g: /gmc
Vanilla Essentials: Technical Tools
A mod that adds useful tools for technical players, command block users, and mapmakers.
Better Look
Better Look, more FPS
LachShield
A customizable plugin that enhances the server security and features
VOID-BOX2
Adventure, Technology, Magic and many QUESTS! All within one single package with the best possible optimization!
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.
![2Gather [Aeronautics]](https://pub-2ae937f770284535a96c3330f91236aa.r2.dev/thumb/curseforge/228022.webp)
2Gather [Aeronautics]
A Create-focused modpack with advanced redstone logic using More Red, magic through Ars Nouveau and Apotheosis, engineering, automation, airships, exploration, and carefully selected mods for a polished, high-performance experience.
ServerPulse
Effortless Minecraft performance monitoring with pre-configured Grafana/InfluxDB via Docker.
Freundeserver Mods
A modpack with recommended mods for your vanilla server with your friends.
AntiAFK - The Performance AFK Solution
AntiAFK is a next-gen AFK management tool. With behavior analysis, macro detection, and Captcha tests, it blocks the most complex bots and exploits. Its high-performance design provides fair protection without overloading your server.
Obviously Optimized
Obviously Optimized is like giving Minecraft a double shot of espresso—faster loading, smoother frames, and less lag, all without messing with the classic vibe.
Movie Night
Watch videos with friends directly in Minecraft. Build a theater, invite friends, and enjoy shared media experiences together in-game.
Bonk Villager
Using revolutionary bonk™-technology, this datapack introduces the Bonk™-Stick9000. The (totally ethical) application of which, makes Villagers much easier to work with and also should increase performance, when used in bulk due to removing their AI.
Redux
A modpack that aims to redefine, optimize and enhance various aspects of Minecraft as much as possible, without changing Vanilla functionality.
MonSanctuary Optimized Official Modpack
This is a modpack made for the official MonSanctuary Server and to help out lower end users run it. While featuring Cobblemon mods along with quality of life enhancements for an improved gameplay experience.
KeyBind MacroKey
Create custom keybinds and macros for commands and chat. An essential utility with a GUI editor, supporting complex scripts, delays, chains, hotkeys, and shortcuts to automate actions. Quick text & command binder. Fast auto-type & multi-binds..
Cookies & Campfires
The cutest and coziest modpack you've ever been given
ChunkDeleter
Advanced chunk cleaner plugin that deletes unused chunks for Paper/Folia servers
Antideath-Carpet-addition
Antideath-Carpet-addition is a Carpet Mod extension for Fabric Minecraft servers (versions 1.21.x - 26.2) designed to enhance and optimize the game experience. It adds a suite of new loggers for server monitoring and game rules for survival, optimizatio
A little bit better Create
Mostly Create-based Mods with a lot of optimisation and QoL-Mods. Also a few mods to make the endgame a little bit more interesting.