Minecraft Java 1.21 Mods
Browse 759 free mods for Minecraft Java 1.21 — popular picks include Inv Tweaker, VariantAPI, Waystones Plus.
Updated daily
Inv Tweaker
Inventory sorting and grouping mod, also has auto fill for the hotbar
VariantAPI
API for adding highly-customizable data-driven variants to entities
Waystones Plus
This project reworks Waystones UI to make it more user friendly
Socialismus
Improve communication between your players in a modern way
Nice Huds
Bossbar Huds for players holding Clocks, Compasses and Recovery Compasses. Also adds a calendar/time based event system including seasons.
Recorder Ingame
Recorder Mod is a lightweight in-game recorder for Minecraft that lets you record gameplay and game audio directly to MP4 files without needing OBS or other external software.
env.json
A small FabricMC library allowing to convert an `env.json` file into a Java Object. It is mostly used by Environment Driven Assets and Environment Driven Data.
BattleTracker
Standalone Minecraft plugin and BattleArena companion for tracking PvP & PvE stats, featuring leaderboards, combat logging, damage indicators and custom death messages.
Adventure Item Names
Unique names for weapons, tools, armour and items found throughout your world.
PvP Bot Formation Addon
PVP Bot Formation PVP Bot Formation is an addon for PVP Bot v0.0.13A that adds automatic grid formation controls for bot groups.

PerWorlds
A plugin that allows you to store player data per world
(Better) Shared Advancements
Share advancements between teams or the whole server, online or offline, with more configurability! Server-side!
Quirky Vehicles Framework
Mod framework providing tools for easier implementation of multipart and multiplayer-movable vehicles
Environment Driven Assets
Environment Driven Assets is a FabricMC mod which implements the env.json library in order to apply it on vanilla asset types.
Datamancer
The must have tool for datapack developers and command block enthusiasts! This mod will accelerate your development process.
Villager Job Tools
Client-only. Reroll any villager's trades (break/place their job site block) until wanted offers appear. Trades Finder, Auto Buy, Auto Sell. Keybinds: K = menu, R = start/stop.
Enchanting Overhauled
Enhances the enchanting experience found in Minecraft!
Redstone Additions
Best redstone&tech datapack, Super optimized, 55+ blocks (Block breaker, block placer, filters, conveyors, item pipes, breeder, generators, gates, chunk loader, wireless redstone, multiblocks, jetpacks and so much more ! )
SkHttp
skript addon for http
Mod Checker Reworked
Mod Checker Reworked is a mod that ensures the presence of certain mods in your modpack.

PowerChord
A component-driven RPG instrument system - you know, hunting-horn-likes!
Cobblemon Pufferfish's Skills API
An API that allows Cobblemon to use Pufferfish's Skills for experience and modifiers.
ZonePractice Pro Duels
Elevate your server with the ultimate high performance Minecraft Modern PvP practice core plugin for playing duels.
A Minecraft Movie Mod
Adds a few features from the Minecraft Movie trailer to Minecraft (requires Fabric API)
MokusLib
A library for some of my mods
LPCF - Chat Formatter
Folia-compatible chat formatting plugin for LuckPerms metadata.
Wisp & Willow
A magic mod, inspired by occultism, botania, and thaumcraft.

Hopplet (Hopper Filters)
Expressive hopper filtering, written as plain text. The most powerful plugin in this domain. Filter by any item property. Extendable via a strong developer API.
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.
PySpigot
A Python scripting engine (plugin) for Minecraft servers running Bukkit or one of its forks (Spigot, Paper, etc.).
MobMoney
This plugin makes killing various mobs valuable for which you will receive money
Barched Extra Spears
An addon mod that extends Barched's Spear items to even more mods!
Hexable: A Hexerei Sable compability mod
This mod adds support between Hexerei and Sable

MECHA - Multiple Entity Collision Hitboxes API
Fabric API for implementing multiple collider hitboxes for a single entity
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.