Minecraft Java 1.21 Mods
Browse 3,588 free mods for Minecraft Java 1.21 — popular picks include Reforgifed Fabric API, Proximity, Wayward Attributes.
Updated daily
Reforgifed Fabric API
Essential hooks for modding with Fabric, now LTS support for 1.20.1
Proximity
A simple Proximity Text chat mod/API
Wayward Attributes
A primarily visual overhaul for how attributes are displayed
more ore iron and more diamond.
More Ore introduces a richer underground experience by greatly expanding the variety and abundance of minable resources.
PluginUpdater
An easy to use plugin version checker and downloader with a shadeable API available for developers.
VR Jester API
Virtual Reality Gesture Recognition API for Vivecraft and QuestCraft
CrumbsLib
A lightweight library to simplify mod development (templates for working with items, blocks, events, etc.)

Alexandria Lib
Alexandria is a lightweight Minecraft library mod that provides shared utilities and a common foundation for other mods. It doesn’t add gameplay on its own but serves as a core dependency to make mods easier to build and maintain.
Christmas Dweller
The Christmas dweller is a modification inspired by Gargin's Cave dweller. Beware, this festive character will track and seize you when the chance arises. NOTE: GeckoLib is required for this mod to work.
ARRP But Different
A mod that allows mods to generate assets/data on the fly, but it's (slightly) different, and also on NeoForge.
Nemo's Tags
Add more tags to improve mod compatibility and make Minecraft’s code more flexible and modder-friendly.

Shappoli
An Origins addon that provides Trinkets & Woodwalkers integrations, a power communication system, and a bunch more stuff!
String Crafting from Wool
This mod adds a crafting for white wool

UUID Hex
High-performance library for formatting UUIDs into hexadecimal strings.
Graal
High performance JavaScript runtime, tweaked for Minecraft usage
Cores
a core library
DS Dragonborn lib
An addon for dragonsurvival that allows the use of the playermodel for custom species.
Televator
A server-side elevator mod for Fabric using Polymer library
TFC More Items
additional metal, leather elements for advanced recipes
Black Anchor
Pack that makes the Respawn Anchor black - good for PvP and overall has a very clean look.
Material Lib
A material library making it that much easier to add vanilla-style materials to Minecraft.
EpicGuard
Bot protection system for Minecraft servers and proxies
Easier World Creator (ewc)
library mod mostly designed for world-gen
TP-Core
This Data Pack is a library for projects published by ThePjotyr.
Roughly Enough Config Screens
Adds configs screens for library mods such as Forge, and Framework.
HSDS Eye Balm
B站著名UP主黑山大叔的護眼材質包。An eye-friendly resource pack crafted by HSDS, a popular Bilibili content creator.
Lusk
Modern, user-friendly skript addon, perfect for beginners and experienced developers.
Moonlight Core
Moonlight Core is a layer abstraction of Minecraft mod loaders that is aimed to help with multi-loader mod development giving developers utilities for their mods.

Zoomly
Lightweight zoom mod for Fabric 1.21.10. Hold C to zoom, scroll to adjust zoom level. Rebind in Controls settings. No dependencies beyond Fabric API. No config, no bloat — just zoom!
Potion API
API mod that supports various potions.
Pebble's Cosmetic Render API
Renderer API to allow for certain cosmetic slots using Trinkets Polymer port to render client-side for people running it.
PlayerProgress
PlayerProgress is a Minecraft datapack that introduces a leveling system. Earn UP from activities like mining and combat to level up and gain new abilities and rewards.
Crafting Manipulator
Library mod for fabric that lets you modify crafting results and more

kiluho's Keystrokes
Worlds most advanced and user-customizable keystrokes mod
Cape Provider X (also PiCapes Mod)
Fork of Cape Provider Mod with upgrades by xsyanic and extended providers (PiCapes, Cosmetica, SkinMC, etc.)
Armadillo Brush Fix
Adds Armadillo Modded Brush Compatibility to Fabric & Forge