Minecraft Java 1.21 Mods
Browse 2,173 free mods for Minecraft Java 1.21 — popular picks include see invis players, DeckyCraft, Simply Smoother.
Updated daily

see invis players
(See Invis Players) allows you to see invisible players as slightly transparent bodys
DeckyCraft
This pack has everything you need to play Minecraft on Valve's Steam Deck.
Simply Smoother
Your go-to, bare-bones performance modpack.
SMP Mods Server
A easy to install server for a HermitCraft style experience.
Horror OneBlock
OneBlock survival with horror mobs, dwellers, guns, shaders, and Create automation.
jelly pack
pack with some essential client mods for jelly and friends :)

简约生电优化 Simplicity Survival Optimization
简约的,生电整合包,更好的优化 simple, survival-assisted modpack, better optimizations
Clay Crafting
Craft into clay balls instead of mining...
spearcore lite🟣
A clientside spear based mod that automates attribute swapping, range extensions, dashing, and more.
kookykraft
Master advanced tech and powerful magic to explore a world of dragons and wizards.
PokeGalaxia Cobblemon
PokeGalaxia is an MMORPG-style Cobblemon server featuring an economy, missions, cosmetics, seasonal events, crates.
Winterlands
A cozy, frosty winter survival experience with festive Christmas ambience, custom worldgen, and polished performance.
Create Aeronautics Expanded | Core
The best multiplayer-friendly well-optimized Create Aeronautics modpack without unrelated mods ! Regularly updated !
PathSpeed
Walk faster on paths and roads — a server-side speed boost where every block gets its own speed, so better road materials are genuinely faster. Works on vanilla clients with no client install.
SMP
A modpack with QOL/performance mods.
Custom Clear Lag
Optimal Fluidity, Enhanced Experience
RandomDirtDrops
RandomDirtDrops is a fun Minecraft data pack that makes breaking dirt blocks drop completely random items from the entire game — from diamonds to dragon eggs! Perfect for chaotic survival challenges and OP item speedruns.
Better Journeys
Vanilla+ Modpack, focused on exploration, nature, and good vibes!
vanilla PvP
mods that make your game feel 10x smoother with 1k+ fps & optimize it for pvp!

Protect
A WorldGuard-like, modern world protection plugin made for API usage
Sundawn
Enhance your vanilla Minecraft experience with immersive and technical mods.
Create Evo Era - Space & Tech
Create 6.0 Tech Modpack NeoForge 1.21.1. Over +250 Quests recipes KubeJS. Highly Optimized Expert Progression. Immersive Engineering Nuclear Power Aeronautics Northstar SPACE travel
Damine
Damine is a performance-friendly modpack by me, featuring beautiful shaders, a minimap, 3D resource packs, and much more. For lower-end PCs, try Damine Optimized for even smoother gameplay.
Cycodly Performance
With shader settings and only 25 mods, this modification pack will optimize your Minecraft experience for the pure performance.
像素城_魔法核心整合包【PixelCity_MagicCore Modpack】
《像素城》魔法核心整合包(1.21.11版),专注生存红石工程。为自动化系统、多人性能优化及技术向Minecraft玩法量身打造。PixelCity MagicCore Modpack (1.21.11) for Survival Redstone Engineering. Optimized for automation systems, multiplayer performance, and technical Minecraft gameplay.
Shulkers In Shulkers *updated version*
The updated version of Shulkers In Shulkers for the later versions of minecraft. Supports 1.20.1-1.21.6
LightOptimizer
Optimize your Minecraft server for peak performance with LightOptimizer.
Create: Mortar - Mango Edition
A Create Addon Compat Mod / Data Pack
BTW - Ore Breaking
An ore mining overhaul to increase mining experience
Origins: Omnix/Omnitrix
Before Azmuth created Omnitrix, There was a beta version and it was tested with a strange DNA system called Origins.
Valx' EssentialF3
Essential F3 is a Minecraft mod that replaces the cluttered F3 screen with a cleaner, easier-to-read version.
WorldListTrashCan
More Than Just a Cleanup Plugin
Performance modpack (Extreme FPS)
Ultimate FPS Boost Modpack The Ultimate FPS Boost modpack is perfect for players looking to optimize Minecraft's performance on a wide range of systems, from low-end laptops to high-end PCs. This pack includes a curated selection of the most effective opt
Boundless Horizons
All the best and custom mods from Forge and Fabric perfectly balanced. Running on 1.21 NeoForge.
Create: Multiplanar Crafters
Create: Multiplanar Crafters is a lightweight, high-performance addon for the Create mod that completely revolutionizes the Mechanical Crafter. It finally unlocks the ability to orient your crafting grids horizontally (along the X/Z axis), facing the sky !
Pause Server When Empty
A datapack that automatically pauses the daylight and weather cycles when no players are online.