Minecraft Java 1.21 Mods
Browse 129,171 free mods for Minecraft Java 1.21 — popular picks include All the Clients - ATC, Flingshot - More Than Just a Slingshot, Animated Bolt Action Guns.
Step by step: How to install Minecraft Java mods & modpacks
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All the Clients - ATC
"All the Clients" is a special modpack for Minecraft that was developed for the client so that it can be used on servers without mods. It offers a variety of improvements for players, especially on small vanilla servers.
Flingshot - More Than Just a Slingshot
A versatile slingshot weapon that gives copper a new purpose through unique ammo, combat options, and utility.
Animated Bolt Action Guns
Turns crossbows into animated bolt action rifles!
Sitchen Kink
A Cohesive and Intuitive Quest Based Kitchen Sink Pack for any Playstyle!
Slime's Silly Plushies
Adds a couple of silly plushies!
Diamond Tools Netherite Style
Replaces Netherite tools coloring with that of Diamond
Armor CustomModel example
This resource pack create as an example of how to create custom armor for Minecraft versions 1.21.5+
Naked And Afraid Plugin
A plugin that aims to recreate the Minecraft Naked And Afraid Series functionality.
Nox: Renoxed Reforged
Mob difficulty overhaul, originally for Fabric, now on NeoForge. Highly configurable!
Rank Titles
A fabric server plugin that manages and displays the titles of players before their names
LongPlay Origins
Aims to deliver a Vanilla experience for long play sessions over the weekend, evoking the nostalgic memories of your first adventures in Minecraft.
You Shall Not Climb!
Takes away an ability to climb ladders from mobs that are not supposed to have it.
Mace Essentials
This orange themed texture pack will help you to become a pro in mace pvp.It feature things like: low fire, low shield, small totem, better particles, animated items and way more
F5 View
F5View adds an improved third-person camera to Minecraft, allowing you to freely rotate the camera around your player. There are also animations and flexible customization options for the entire mod.
TheDru Chameleon (Meccha)
This is definitely NOT the same game as Mecha Chameleon ;)
Idle Animations
Idle Animations makes standing still feel alive.
ChatUtility
This mod is extremely lightweight, yet it makes chatting more convenient and offers a wealth of features.

Unlocked World Border
A Mod that allows going outside of the World Border, and allowing interaction with blocks outside of it!
AnvilCraf: KubeJS
AnvilCraft's KubeJS Compat
custom-crafter-api
An advanced PaperMC crafting engine for building complex recipes with NBT-supported custom items.
Ice Age
A light, building-focused modpack for Minecraft 1.21.8 featuring improved visuals, snowy biomes, performance optimizations, and quality-of-life tools for playing casually with friends.
Arca-Armaments
The custom weapon mod made for Arcamere.
kiyo's pvp client
modpack designed to make your PvP experience just a little better :)
Everything You Want
Adds user suggested features like a powerful new End ore, bizarre mobs, strange structures, humorous poo-themed items, and much more for a chaotic and fun gameplay experience.
uiinpui's Enchantments (legacy version)
A collection of enchantments that I wanted to make because I was bored and wanted to learn how making datapacks works :>
Buildering
A creative building and testing focused pack made to give as many tools as possible to the player and make collaboration easier via Essentials
The Old Days
Jump back to the alpha and beta times of Minecraft
Frog Swords
This pack changes swords to a frogs

Better UI Keybinds
Mod that adds new keybinds to navigate the Minecraft UI
Glitchdex
Adds a variety of fakemon adapting glitch Pokemon!
Casino Helper
CasinoHelper is designed to work on the DonutSMP, and help you enhance the gambling experience.
Hypixel Skyblock PackHQ Books
Updates the book textures to work with the most recent version
Gible SMP
A modpack made for the Gible Fan Club Discord server/friend group.
SimpleEffects
Simple spigot plugin, adding effects to your server.

Wingdings Enchants
Replaces the Standard Galactic Alphabet (Enchanting Language) with Wingdings.
Canvas
A Vanilla+ modpack focused on staying up to date with Minecraft