Minecraft Java 1.21 Mods
Browse 126,758 free mods for Minecraft Java 1.21 — popular picks include Held Shield Damage Reduction, Configurable Bannable Items, 3D musket mod.
Step by step: How to install Minecraft Java mods & modpacks
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Held Shield Damage Reduction
Passive damage reduction for held shields, including modded ones, with configurable per-entity and per-item overrides.
Configurable Bannable Items
A lightweight server-side mod that lets operators ban specific items by their full item fingerprint (registry ID + NBT). Banned items are automatically destroyed wherever they appear: inventory, cursor, ground, crafting table, or anvil.
3D musket mod
3d weapons models for ewewukek's musket mod

UltiItems
Adds a GUI which gives you above god-tier items.

smiling pickaxe
A resource pack where the pickaxes smile
Classic Colors
Pre-1.12 colors for beds and concrete blocks.
PickUpExtender
A Fabric mod that extends the pickup range for items in the world.
PlushiesMod
A mod that adds Plushies for each Re:Create Season 2 member.
Create: Cyan Factory
A lightweight, Create-Based Pack centered around Create 6.0
Streamer.craft
Trigger Streamer.bot Actions from in-game!
InVlate
Lots of content to make Minecraft more challenging!
Battle Axed
Makes all Axe's Battle Axe's
Rat Pickaxe
The rat from the shivering rat meme put onto a pickaxe handle and animated to look like he is shivering violently.
zCookieClicker
CookieCliker
Copper Country Furry Forge
Copper Country Furry Forge - A small Create centered kitchen sink pack!
PokeVanilla Cobblemon Pack
Modpack for Cobblemon to play on the PokeVanilla server.
AstralSwords
AstralSwords adds powerful, lore-inspired swords with unique abilities, each reflecting the strength
Wayland Optimized
A simple Minecraft modpack focusing on performance and graphics enhancements on wayland linux.

Fancy Cactus
Remodels the Cactus Flower and the Cactus Block.
Dary's Dark GUI
My own version of the dark GUI for Minecraft Java 1.21.x!

Biome Limited Growth
Restrict the growth of crops, saplings or anything else by what biome it's currently in.
The Watcher (dweller)
The Watcher stalks you in your world, he will find and chase you
CNY 16x (Java Port): GUI-Only Edition
The GUI-only version of the CNY 16x Java port, a pack originally made by PrestigePlayzMC for MCBE
TaskMaster
TaskMaster: Revolutionizing Minecraft BattlePass Systems
VeinDigging Global Blacklist
A datapack to introduce a global blacklist which may help in preventing one-click-base-destroying if the VeinDigging mod is installed.
Improved Fishing Mod
Mod which intends to improve fishing with new fish and fishing equipment.

Chickens Shed Feathers
Chickens will sometimes drop feathers instead of eggs!
Dye Tweaks [Data Pack]
Adds the ability to duplicate dyes efficiently
EBFsmp
The mod includes new biomes, decorations, tools and armor.
Adventure Map Utilities
Different Utilities like keybinds for adventure maps
Singularity Shaders
Delivering 3x the FPS of standard shaders with cinematic visuals: realistic night skies, dynamic water physics, an active black hole, and filmic atmospheric lighting.

Side Shield Refined
This is the best side shield pack on the web with the perfect-sized blocking animations.
Distaf's LSN Hoarder Sword
A texture pack for custom enchantments on LifeSteal.net (LSN)
TW's Core
The bridge between Tenacious Wonder mods.
meow pack
This resource pack is suitable for Cart PvP and is very good in Crystal PvP because it has a small fire and it changes the GUI of the inventory, making PvP much lighter
Aragorn's Light Shader
A light shader which adds basic shadows, anti aliasing, realistic clouds and semi-realistic water to Minecraft.