Minecraft Java 1.21 Mods
Browse 770 free mods for Minecraft Java 1.21 — popular picks include anti chest esp donut smp, Coblemon:Expierence Boost, PvP Bot Formation Addon.
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anti chest esp donut smp
DonutAntiChestESP Advanced Chest Visibility Protection for Minecraft Servers
Coblemon:Expierence Boost
ExperienceBoost — Global XP & Shiny Boosts for Server Events with OP-Controlled Items! ExperienceBoost lets server admins easily trigger temporary global XP multipliers across the entire server—perfect for events, celebrations, or special gameplay moments
PvP Bot Formation Addon
PVP Bot Formation PVP Bot Formation is an addon for PVP Bot that adds automatic grid formation controls for bot groups.
Data Command Plus
Storageplayer, Concatenate, Loot Entities, Player and Data Manipulation
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
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.
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.

PerWorlds
A plugin that allows you to store player data per world
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.
(Better) Shared Advancements
Share advancements between teams or the whole server, online or offline, with more configurability! Server-side!
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 ! )
Enchanting Overhauled
Enhances the enchanting experience found in Minecraft!
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.
Wisp & Willow
A magic mod, inspired by occultism, botania, and thaumcraft.
SkHttp
skript addon for http
ZonePractice Pro Duels
Elevate your server with the ultimate high performance Minecraft Modern PvP practice core plugin for playing duels.
Hexable: A Hexerei Sable compability mod
This mod adds support between Hexerei and Sable
Zander Core
Lightweight core library required for Zander’s mod ecosystem
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!
LPCF - Chat Formatter
Folia-compatible chat formatting plugin for LuckPerms metadata.

Pehkui Continuation
Unofficial continuation of Pehkui for newer Minecraft/Fabric versions.
Barched Extra Spears
An addon mod that extends Barched's Spear items to even more mods!
A Minecraft Movie Mod
Adds a few features from the Minecraft Movie trailer to Minecraft (requires Fabric API)
MariesLib
MariesLib is a shared NeoForge 1.21.1 library powering Marie’s mods. It provides runtime item classification, mod compatibility discovery, registry infrastructure, and developer utilities
MokusLib
A library for some of my mods
MobMoney
This plugin makes killing various mobs valuable for which you will receive money

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.
Aerodynamics4MC
A mod that adds realistic aerodynamics & wind to Minecraft
PySpigot
A Python scripting engine (plugin) for Minecraft servers running Bukkit or one of its forks (Spigot, Paper, etc.).
Reduced Invincibility Frames
RIF stands for 'Reduced Invincibility Frames.' The purpose of this mod is to reduce iFrame duration or disable it.