Minecraft Java 1.21 Mods
Browse 2,192 free mods for Minecraft Java 1.21 — popular picks include FWG: Megapack, CSLmcClient, Stardivers.
Updated daily
FWG: Megapack
This comprehensive modpack centers heavily around the Create mod and its vast ecosystem—including realistic physics and aeronautics—to offer a deeply immersive industrial and engineering experience.
CSLmcClient
This modpack is no longer being worked on in the CslMc server due to requests from server staff and community to switch to back to paper. I have Archived it for anyone who still wants to try the pack for their own reason. I am sorry for any inconvenience!

Stardivers
Modpack for the Stardivers Create Aeronautics server

MCELO
A high-performance, feature-rich Minecraft Practice plugin designed for 1.21.11 competitive play. This plugin provides a complete ranked environment with Elo ratings, personalized kit layouts, and automated arena management.
Volt: Server Control
25+ unique admin commands for player management, world modification, and physics control. Freeze fluids, magnetize items, instant healing, gravity control, and much more.
Technical Fox
Technical Fox — industrial modpack
Lands of Eclipsia - Official Modpack
The official modpack for Lands of Eclipsia, featuring enhanced exploration, MMO-like systems, optimized performance, and full multiplayer integration.
Drop & Grow
Automatically plants dropped saplings. A great quality-of-life feature for clean inventories and farm automation that fits perfectly into vanilla survival
The Modpack Modpack
Some mods that might be helpful to those wanting to make a more complex modpack!
Mod Copper Item Recipes Compatible│模組銅物品配方兼容
You can use the new Copper Ingots with different rust levels added by the Copper Extension to craft the new Copper Pipes with different rust levels added by the Simple Copper Pipes.│你可以用銅擴展新增的不同生鏽程度的銅錠來合成簡單的銅管新增的不同生鏽程度的銅管。
New feeling
New feeling aims to provide players with a new feeling and offer certain performance optimization and beautification based on the original version.
Better Campfire Cooking
It makes campfires better by adding new recipies, doesn't impact performance much.
Create: Aeronova
Simple Create: Aeronautics modpack built to have cool exploration and diversity with several addons. Mainly made for personal use and to play with family so don't expect perfection.
SimpleChunks
An easy-to-use chunkloader with a modern GUI, teleport system, and secure permission management — ideal for farms, redstone, and automated systems.
TechTerrain
Ever wanted a tech modpack with a beautiful world gen? look no further than this modpack.

Glowstone
The Vanilla+ pack for heavily modded enthusiasts
Simply Handheld
A Modpack of handheld capabilities like MSI Claw or Steam Deck
What Is My FPS??
WIMP is the next generation of Minecraft Client Modpacks and human evolution. For the curious, the adventurous, and those ready to know more: Finally see your FPS.
noLobbyChat
The NoLobbyChat plugin for Spigot/Paper disables chat for regular players in lobby servers while allowing staff to chat freely. It includes a configurable response message, an in-game command for changing the message, and supports color codes.
SmartRestart
Schedule server restarts and stops with a single command — every player sees a live countdown BossBar in exact minutes and seconds with dynamic color warnings and sounds.
Sparky optimize
Increse in FPS For smooth Gameplay and better performance

Craftable Light Block
Just DataPack add recepie for light block
Enhanced Interactions
A collection of resourcepacks and client side mods that enhance the players interactions with the world and other players
MobSpawnBlockerPL
MobSpawnBlocker is a lightweight plugin for Paper, Spigot, Bukkit, Purpur & Folia that allows you to block specific mobs from spawning using an easy-to-edit config.yml.
Builders Heaven
Builders Heaven is a Modpack that is designed to enhance a creative players building experience. It adds more than 20 mods to help with QOL and Building
KoroskiHub
A minecraft optimization modpacks that was designed for better experience on the KoroškiHub minecraft server.
xTree
TreeFeller is a Paper plugin for Minecraft 1.21.x that makes tree cutting feel more natural and visually satisfying.
ResourcepackPlus
Minecraft plugin that semi-automatically updates the server’s resource pack (GitHub for source, Dropbox for hosting).
RemoteMC
Remote Control of your minecraft server
Video pack
Mod pack for new youtubers with basted graphic resource pack and mods + mods with convenient features for replays
ULTIMATE SMP LITE
A lightweight SMP utility plugin with homes, teams, TPA, scoreboard, and realistic tree gravity. Designed for clean, simple, performance-friendly survival servers.
MegaCraft_823
Warning: This modpack is originally translated into Russian. To translate it into another language, click the button. please read the description before playing! this pack was created to improve your minecraft experience. the pack is completely client-side
Automatic messages
Automatic messagese plugin with nice design
Lagmanager
This plugin monitors redstone entity lag and keeps your TPS high through optimization ideal for server admins.
opti1.21
vanilla build 1.21 with mods for optimization and a more convenient game.
CyberWorldReset
Easily reset a world with a scheduler or a specific time/date and more!