Minecraft Java 1.21 Mods
Browse 3,303 free mods for Minecraft Java 1.21 — popular picks include CraftSense, Cybernetic System, Redstone Sound Slider.
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CraftSense
A Minecraft mod that suggests crafting recipes based on what you’ve crafted before, letting you quickly craft items with one click or a keybind.
Cybernetic System
An industrial mod in the style of the "future", which allows you to improve your genes, create implants and even create weapons. You can become a cyborg and improve yourself in different ways and use your abilities for Energy.

Redstone Sound Slider
Adjust your piston / dispenser / trapdoor / buildstone volume separately from other blocks.
Create Aeronautic
This is a Minecraft 1.21.1 NeoForge pack centered on the Create mod and Aeronautics for advanced mechanical automation and airships. It is heavily optimized for visuals and performance using Distant Horizons, Sodium, and the EMI utility suite..

Create: Sandpapers
Create: Sandpapers expands automation by adding new kinds of sandpaper and helpful recipes.
ByteBuddies
Meet the ByteBuddies, your loyal mechanical helpers built to make life easier and more fun. Whether you’re farming, mining, hauling loot, or need a defense detail, there’s a Buddy for every job.
DonateCase
Donate cases for your server Minecraft
Immersive Portal Gun for Forge
Port of Immersive Portal Gun for Forge
Cobblemon Fossil Hybrids!
A addon that lets you create your own cobblemon hybrids!
Expression: Core
Expression adds hrt, decor, and new mechanics to the game!
Nearby Crafting
Allows crafting to access nearby chests or other containers, because that's how it should be!
Create: Linear Bearing
This mod adds a working linear bearing for Create Aeronautics.
The Expansion
Explore Space In Minecraft! Now with Spacesuits!
Better Experience of Confluence
Provide auto fishing machine, more block breaking tool and infinite item comsuming.
Piglin Conservatory v3.0
Adds a news structure to the Nether, The Piglin Conservatory, along with a new Obsidian Apple, Dragon Fruit, Toxic Mushrooms, Hoglins' Fossils, Corrupted Emerald and a New Music Discs!
Create: Old Infrastructure
an addon create that adds decorative blocks, levers, electric lamps and lanterns and signal code, I'm being precise but it's an alpha, practically none of the blocks are craftable and some don't work at the moment. the project work in progress

Stackable Totems
Totems now stack up to 64
Open Inventory
OpenInv is a powerful Minecraft admin plugin that lets staff view and edit player inventories and ender chests using /inv commands, featuring a modern GUI, database-backed inventory snapshots, rollback support, and multiple Minecraft version support.
SimpleClaimSystem
Full claim system for Minecraft servers. Fully configurable and many plugins supported.
The Boys
This mod allows you to become one of the characters from the Boys universe, like Homelander, Train A or Transparent.
Aeronautics: simulated copycats
Create copycats with different physical properties for create aeronautics
Cobblemon x Generations (Generations-Core)
Generations is a massive sidemod crafted for Cobblemon, we enhance your experience by replacing blocky models with game-like Pokemon models, add thousands of blocks & items, and tons of new features.
Mace_PVP Traning Bot
This mod provides the player to train their mace
Create: Configurable Machine Outputs
Take control of your create machinery automation! This mod lets you choose which recipe your millstones, crushing wheels and presses use when multiple addons create conflicting recipes, ensuring predictable and reliable automated systems.
CC: Redstone Link Bridge
This mod connects Create Redstone Link networks with CC:Tweaked computers.
Create: Northstar-Aeronautics Compatibility
This mod adds a block named Dimensional Drive which, when attached on a physics object, has a GUI to select a destination planet form Create: Northstar. It teleports the physics contraption and the player on the selected planet. No crafting recipie yet.
Smooth Camera Movement
Mod that makes your Camera Movement Smooth!
Universal Vein Miner
A faster way to mine ores, logs
SayanVanish
A modular vanish system for Minecraft servers
Potted Farms
Build potted farms that harvest trees and other growables.
Xray Vision+ [Now less laggy]
XRAY... BUT LEGAL,...... XRay Vision+ is a legal client-side cave assistant for Minecraft.
Mining Quarries
Build quarries that mine cobblestone and ores!
CobbleSpawners
This Cobblemon addon mod allows map creators or admins to place custom Pokémon spawners, manage spawn settings via a GUI, and control Cobblemon spawning behavior, including Pokémon species, spawn chances, and custom stats.
Bubblellaneous
Adds Furniture, Technology, Food & Miscellaneous blocks and items.
CCreate Modpack
An integrated package based on mechanical power. 一个基于机械动力的整合包
Aeronautics: Calibrated
A mod that adds extra features to Create: Aeronautics that improve it slightly.