Fabric Mods for Minecraft 1.21
Browse 1,482 free Fabric mods for Minecraft 1.21 — popular picks include Reduced Invincibility Frames, Gimme That Gimmick, Quill Notifications.
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Reduced Invincibility Frames
RIF stands for 'Reduced Invincibility Frames.' The purpose of this mod is to reduce iFrame duration or disable it.

Gimme That Gimmick
Adds server-side generational gimmicks to Cobblemon.
Quill Notifications
A small Library mod to handle sending notifications to players both online and offline with style!
One punch Man (Anime)
Experience the power of One Punch Man in Minecraft! This Fabric mod adds insane strength, abilities, and anime-inspired gameplay. Fabric API required.
CobbleQuestBridge
Bridge Cobblemon captures to stats and scoreboards for FTB Quests
Use Server Name
Use the server name instead of the ip to save server related data
JMXL
Library bringing some extensions to the model format
JDA Library
JDA Mod so mods can easily get access to using JDA without needing to do shenanigans such as JarInJar
NoUpgradeNetherite
Remove of Necessity or Upgrade In Netherite Craftings in Minecraft Java!
no fun allowed
data and component driven adventure mode location protection for showcase servers

MECHA - Multiple Entity Collision Hitboxes API
Fabric API for implementing multiple collider hitboxes for a single entity
HapticCraft
HapticCraft makes that you can fill haptic feedbacks with bHaptics TactSuit devices in Minecraft
TLA Api
An abstraction layer over recipe viewer apis for minecraft.
Clutch
In some cases a clutch will be impossible. This mod shows whether a clutch is doable and how difficult it will be, alongside many other clutching utilities.

ActionLib
Lib that Register HoverEvent.Action
Replant+
A lightweight and server-friendly mod that automatically replants crops the moment you harvest them.
KubeJS CSV
Add CSV parse/read/write support for KubeJS
Composer
A library mod created to improve the QOL of developing fabric mods.
GravityChanger (Banana Fork)
Lets you change the gravity direction of most entities, but works best for the player.
SSS Translate
A library to add Crowdin internationalization to mods.
Hot Swap
Automatically Swaps To The Best Weapon/Tool
PvPCore
Identify friend and enemies easily with colored tags, global internal chats for clans.
Jump Enchantment
New enchantment that, when applied to boots, increases your jump height!

Pehkui Continuation
Unofficial continuation of Pehkui for newer Minecraft/Fabric versions.
Farest's API
An API for FarestR06's projects
OnlyWaypoints
A Minecraft Fabric Mod that adds bloat-free Waypoints with a Vanilla feel to the game
PromotedServer
Allows Modpack creators to promote their modded Servers.
Sword Utils
Real-time Java sword PvP feedback - recalibrated cooldown overlay, combo tracker, kill counter, auto sprint, reach display, damage immunity timer, and jump reset grader. 1.21.11 | Client-side only.
ManualTotem
A simple mod that helps with manual totem placement by automatically moving your cursor to a totem when you open your inventory.
Equipment Sets
This mod adds equipment sets that provide a bonus when an entity has items of a set equipped.
More Outputs API
A developer API to add recipes with more than one output
MTR: Surveyor Integration
Add MTR Stations & Depots landmarks for the Surveyor Map Framework
Entity Health Display
Fabric server-side library mod for displaying entities' health.
Player HP Display
A simple mod that shows the nickname and HP of the player you're looking at requires Fabric API.
Polymer Font Utils
API for generating font files
Spawn Egg BYID Redirect
Needed for same Spawn Egg type compatibility