Minecraft Java 1.21 Mods
Browse 12,087 free mods for Minecraft Java 1.21 — popular picks include WoodlyChopper, Optimized + Craft Attack, AUTOPOT.
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WoodlyChopper
Chop down one log with your axe, and the whole tree falls! Includes optional leaf removal, vanilla-style durability, protection-plugin compatibility, anti-lag limits, and an easy-to-use configuration file.
Optimized + Craft Attack
Simple Mod Pack from Optimized + for Community Craft Attack
AUTOPOT
This is a fabric mod that allows you to use all desired potions just by clicking one single button
Cows Are Aliens Server
The server side for Error 101 "designed to optimize performance and enhance the vanilla Minecraft experience, focusing on subtle UI improvements, sound tweaks, and quality-of-life adjustments, all while staying as true to the original game as possible"
Airy Optimized
This modpack includes optimization mods that help with both gameplay and map-building, ensuring you get the best performance
Literally Optimized
Optimized with all possible mods for low-end PC's.
Overly Added
Overly Optimized for the OptiFine user.

Eddyveil Shaders - MacOS
A simple, light weight shader that has cool visuals while still maintaining performance, perfect for people who want bright but quality caves, amazing night skies, etc. There are 2 versions, one for Mac and one for Windows.
Leaking Kitchen Sink
Tech, magic and structures filled with loot. Good performance and included shaders. No gated recipes!
Enhanced Efficiency
A modpack that aims to drastically improve the game's performance and adds a ton quality of life features for the best Minecraft experience.
SoundGC
Garbage collects sounds!

A Land of Twigs
A Land of Twigs is a vanilla+ modpack that blends Create, Farmer’s Delight, No Man’s Land, and various QoL mods. Together, they create a fresh new experience that while familiar, expands on vanilla Minecraft without losing its core charm.
Expritan Collection
Main modpack used by Nonno - Contains the suggested mods for the expritan server + some additions.
金苹果综合优化 GoldenApple Optimized
一款优化辅助类整合包,相较原版增加了诸多实用性功能. An optimisation‑oriented modpack that adds numerous practical functionalities to the vanilla game.
Akane's PvP Pack
My personal PvP pack to any vanilla+simple voice chat server.
ZigCRT
Creates a wavy, pixelated CRT-style distortion effect.
Better Potato
Optimized and visually enhanced for a potato
[MIO]极简优化-Minimalism_Optimized
A basic optimization 一个基本的优化整合包
PhantoM PlayZ Optimized
PhantoM PlayZ is the best optimization modpack to optimize and boost your Minecraft experience with better performance and amazing visuals. Improve FPS, reduce lag, enjoy smooth gameplay with this lightweight and powerful modpack. Perfect for all Minecr
Vanilla | Reconsidered
Vanilla experience enchanced with little tweaks while keeping the vanilla aspect of the game! Now with 1.21.1 Support!
Binary's Classic Minecraft Modpack
Classic Minecraft, but with some visual tweaks.
NostaLens
A nostalgic shader adding a fisheye lens, subtle VHS noise, and retro colors without distorting your UI or held items.
Create: Endless Industry
A large Create-focused modpack about automation, engineering, factories, exploration, building, changed progression, and creating your own endless industrial world.
Native Horizon
A refined Vanilla+ experience combining peak performance with advanced building tools like Litematica.
Resimlrr Optimized
Resimlrr Optimized is a performance-focused Minecraft modpack that boosts gameplay smoothness and visuals, ideal for all systems.
NextRTP
A better option, with better performance, a better rtp.

Cobblemon Super Enhanced
This Cobblemon modpack puts you in the world of Cobblemon, but to advance threw world of Cobblemon you'll need to defeat the 8 gym leaders from the original Gen 1 Games. And who knows you might even find a shiny Mon out there
Cobblemon Odyssée
A wild world awaits you, with floating islands, enchanted forests, and roaring volcanoes, where riding your Pokémon will lead you to hidden zones and treasures. Cooperation, exploration, and competition set the pace for this adventure where Pokémon roam fr
Nitroserver
Lightweight serverside optimizations for Fabric 1.20.1, 1.20.6 and 1.21
Plasmar's survival modpack with masady's mods and other stuff
fabulously optimized with masady's mods and other stuff
Mellend Optimization
The project is focused on developing an optimized Minecraft build with an emphasis on performance, stability, visual appeal, and maximum compatibility with each version.
WelcomeMessages
Lightweight welcome/join messages plugin for Minecraft 1.21.X with effects, rank support, and actual performance
Socky's Create Modpack
A Create centered ish modpack with plenty of vanilla+ content, made to not feel overly modded while providing a modded experience. large focus on optimization and ability to run on lower-end systems.
Breeze Shaders
Lightweight cinematic shader with biome-colored fog, dynamic foliage, atmospheric skies, and immersive weather.
BuildsModpacks
Vanilla-ish performance, QOL and visual quality focused modpacks and create modpacks.
SkullShade
Fast and smooth Fabric PvP modpack for Minecraft 1.21.11