Fabric Mods for Minecraft 1.21
Browse 24,909 free Fabric mods for Minecraft 1.21 — popular picks include Time Stop Clock, SDM Engine Core, Datapack Portals.
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Time Stop Clock
Let you control time in minecraft!
SDM Engine Core
The game engine in Minecraft!
Datapack Portals
Create custom portals using CustomPortalApi with datapacks
Potentials
Library to allow mod developers to use cross platform capabilities
Shuttfup
A mod that fixes some minor annoyances!

Hoplite for Lunar Client
Tailor-made list of popular mods to enhance your gameplay experience on Hoplite through Lunar Client, including in-game proximity voice chat.
Epic Knights: Slavic Armory
Adds medieval Slavic armor and weapons to the game
Respect My Trims
Makes golden armor trims pacify piglins

Red’s More Structures
Adds more structures and dungeons to Minecraft
Wandering Trader May Leave
💨 Adds a button to the Wandering Trader's screen which makes it disappear without violence.
Moog's Glow Up
I thought glow ink was pretty cool but didn't have enough uses, so I added a bunch of vanilla-feeling features that make it more fun to play around with.

Shingeki no Craft | Attack on Titan
Titan Shifters, ODM, Cannons, Pure Titans, Thunder Spears, Modified Villages, Firearms, Royal Blood, Quests and more! Made using only Command Blocks, Minecraft Vanilla!
Create: Better Villager (Fabric/Forge/NeoForge)
[Create-6.0.6 (✓) ]Create: Better Villager that adds a host of Create-mod villager professions | Forge/Neoforge and Fabric
Coins JE
A simple coins mod for questing and role play.
Forgiveness
Add many usefull crafts
Enchant Limiter (RPG Tweaks)
Limit the number of enchantments on an item.
Loot Integrations: Dungeons and Taverns
Adds better loot to Dungeons and Taverns chests including modded loot
Exposure: Expanded
Addon for Exposure that adds new lenses, filters and films.
Ring of Attraction [FORGE/NEOFORGE]
A simple item magnet
Ruined Lighthouse
Adds a broken lighthouse to the beach with hidden loot and a challenging parkour inside, rewarding players who reach the top
More Concrete
A simple mod that adds more concrete variants into Minecraft!
Dynamic Tooltips
Shrink giant gear tooltips. Expandable!
Scarecrows' Territory
Scarecrows' Territory keeps spawners activated!
Waxable Coral
Wax your coral! Stays alive even when it's dry!
Toast Manager
Gives you more control over the toasts that popup in the corner. On Fabric!

Guarding
Implements new mechanics and enchantments to shields.

Soup Visual (PvP Visual)
Visuals for the best PvP experience and playing with friends. Have fun :D
Synesthesia: Sound Visualizer
Addon to Extreme Sound Muffler that allows you to locate sound sources (or a standalone keybind)
Knowlogy Book
An expandable wiki-like book with documentation about the game, inspired by the knowledge book, powered by lavender.
Fright's Delight
Fright’s Delight is an add-on mod for Farmer’s Delight that adds food made from mob drops. Dishes are created with a “Horror” theme, consume with caution.
ReMorphed | Identity-style Morphing, Rebuilt
Kill. Collect. Transform. Enjoy.
Just More Cakes! (NeoForge/Fabric)
Adds 30 new flavors of cake along with new improvements and mechanics for a better cake experience
Tensura: Not Enough Bosses
Official Addon for Tensura: Reincarnated adding new bosses to the game for quests.
Craft Slabs Back into Blocks [Fabric/Forge/NeoForge]
A fully configurable mod that lets you craft slabs back into blocks
Infinity Cave
Infinity Cave adds a seemingly infinite cave system beneath the bedrock layer increasing it from -64 to -128. With this comes many new challenges and an overall different way of experiencing PvE.
RPGMana (Mana for Spell Engine)
Bringing Mana to the Spell Engine mods!