Fabric Mods for Minecraft 1.21
Browse 1,012 free Fabric mods for Minecraft 1.21 — popular picks include Outlined, Potato's Chips 'n' Skills, Cobblemon: Rare Salty.
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Outlined
Allows for more hitbox outline customization when you look at stuff!
Potato's Chips 'n' Skills
A datapackable RPG skills & leveling system
Cobblemon: Rare Salty
Have you ever wanted to lower your Pokemon's level? Have you ever looked at your team and thought: "What if my Dragonite was level 3?" Probably not. But now you can.
Starfall Visuals
Starfall is a Fabric client-side cosmetic mod for Minecraft 1.21.11 that makes glowing falling stars burst around entities when you hit them. Mod Menu, lets you tune size, speed, radius, glow, height, star count and colour.

Old Legends
The remains of old legends wait to be discovered
Pet Inventory
This lightweight mod adds personal inventories to tamed pets.
koper_mod
A chaotic Minecraft mod with unique bosses, broken armor sets, and a corrupted dimension a little unbalanced but fun as hell.
Frogged
More frogs and froglights in Minecraft!
HitPings
HitPing plays audio feedback when you land 3 block hits. A soft ping sounds on hits between 2.8–2.9 blocks, and a sharper ping sounds on hits at 2.9+ blocks helping you recognize 3 blocks and improve your spacing.
Bleu
Axolotls' "blue" variant becomes uninheritable; all blue axolotls will have been by chance! Chance is configurable, 1-in-1200 by default.
Thermia
An in-depth, dynamic temperature system for all creatures!
Size shifter/Antman origin
Adds the size shifter / antman origin to minecraft
Happy Ghast Parking
Park your Happy Ghasts to make them stay completely still! A better Happy Ghast mod featuring increased flying speed and mid-air parking (perfect for building)
RZGYMS
RZ Gyms is a Cobblemon sidemod that adds a structured gym and league progression with custom trainers, themed teams, badges, and increasingly difficult battles built around Cobblemon, Radical Cobblemon Trainers, Mega Showdown, and Zamega.
SpiderSense
SpiderSense - Minecraft mod that enhances the player's perception by providing visual and informational clues about nearby mobs. It is designed to help players detect and track hostile creatures. Fully operational on servers.
Turbo Happy Ghast
Increases the Happy Ghast's flying speed whenever a player is mounted on it.
Saltcraft
A mod adding salt biomes, mobs, structures and blocks into Minecraft
More Kittens
This mod makes a cat litter more realistic, by instead of breeding only 1 kitten, it can vary between 3 to 5 kittens
Floristry
A mod about bees and breeding, but not like that.

BloodInfection999
Delve into a world ravaged by a terrifying blood infection, where once-peaceful creatures are corrupted and your own survival is constantly under threat.
Random Size Mobs
Mobs spawn with unique random sizes, affecting their HP, damage, and loot. Includes dynamic growth mechanics!
Simple Gravity Changer
This datapack adds a function to change the gravity of the world.

Always Drop Loot (updated)
Make mobs always drop exp and loot, regardless of cause of death.
More Fox
New foxes with new mechanics
Better Happy Ghasts – Fly & Ride
Reimagined Happy Ghasts that make flight and survival more interesting
Minecraft Extra
A Minecraft mod that upgrades the combat and farming systems and adds some other handy features to make your life better.
BlackPigs
A simple mod that adds the /hruk command and replaces the textures of all pigs on black
Leafs Crucible - Ice and Fire
Leafs Crucible: Ice and Fire - Explore a magical world of ice and fire, featuring unique temperature mechanics, powerful new weapons and tools, and challenging hostile mobs!
Darkness
A funny horror mod. Not really horror but very annoying.
Spawn Animations Cobblemon Compat
Compatibility for Spawn Animations with Cobblemon.
Random Drops From Blocks (RDFB)
This mod making if you break blocks, you gonna get random stuffs, like blocks,tools,mobs
The Creakening
Adds creaking variants for all overworld tree types, and allows for creaking spawns no matter the time.
Dodger
Dodger is a client-side Minecraft mod that automatically dodges projectiles from hostile mobs.
Let Them Be Here
Stop the annoying sudden despawn of hostile mob in peaceful mode!

Allay Companion
Replaces the totem of undying with an animated allay entity that moves around with you.
No Sniffing
Stops the warden from sniffing, it will wander around or stay still instead.