Minecraft Java 1.21 Mods
Browse 126,758 free mods for Minecraft Java 1.21 — popular picks include FreizeitparkCraft, CozyCraft Low, Autumnity Waffles.
Step by step: How to install Minecraft Java mods & modpacks
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FreizeitparkCraft
This modpack is built for players who love creativity, automation, and architectural freedom – perfect for designing and building massive theme parks in Minecraft 1.20.1.
CozyCraft Low
The official low-performance Modpack for the CozyCraft Minecraft Server. Craft your own Cozy City and clear all the new Structures.
Autumnity Waffles
Changes pancakes from Autumnity into waffles.
The Prison Realm
The Prison Realm can trap players and Monsters.
Ember Seed Guard | Kills the Seed Cracker's Shortcut | Spoofed F3 Hash, Fake /seed | Free
Seed crackers need one number from your server. Ember Seed Guard sends them a fake one.
ItemClumping
customizable drop item clumping
Unusual Portals
Turns Nether and End portals into eerie, glitched rifts in reality, like the game itself is breaking apart.
Ender Padding
Changes the Eye of Ender recipe to pad the run time of the game (and other crafting changes)
Cobblemon Pogwarts
Cobblemon Server for friends and fam
WhatBlock
Lightweight client-side HUD that shows the block you’re looking at: icon + localized name + registry ID. Auto-hides when you aren’t looking at a block.
NoFullBright
Paper plugin which executes a command when it detects a player using full bright texture pack

rozseek
A hide and seek mod for 1.21.4+
Rebearth Remastered
The remastered Minecraft Earth themed resource pack!
Warrior's Crest SPD
You know Shattered Pixel Dungeon? Some of its features are now in minecraft!
Tier Optimized
Best Minecraft optimization modpack
Simple Survival Extension
An expansion of items and weapons in the original Minecraft style!

Stellarnova
My first mod, currently only adds a few blocks and items but hopefully will get more refined and in depth in time :)
More Mine
"More Minerals" is a Minecraft: Java Edition mod that introduces new ore types to the vanilla ore generation system.
voidkeep
a customizable Mod/Plugin that saves players inventories and xp on void death (FORGE SUPPORT MOVED)

MC Fixed+
Another, but different, Modpack for 1.21.4 that makes Minecraft Fun again.
The Solar System
Adds *almost* our entire solar system into minecraft!
Daily Grind | Daily, Weekly and Monthly Quest GUI [1.21.+]
quests, daily, weekly, monthly, challenges, rewards, gui, survival, economy, roleplay
Ash's Client for Hypixel Skyblock
A modpack centered around optimization and utility features for players of Hypixel Skyblock.
Fabric-GeoLogin
A fabric server-side mod that restricts login countries in the real world
Universal Trade Sation
Universal Trade Sation for Minecraft
Waxed Lightly Weathered Cut Copper Stiars
Brings back the old name
LastSeen - Player Last Seen Time ⏰ Playtime Tracking ⏳ MySQL Support ✅
Best player time tracking plugin Fully customizable formats
TailsLib
Make your custom things without mods just with your plugin!
PixelPeak Optimized
Official PixelPeak Modpack that guarantees the best experience on the PixelPeak Server
okVanilla+
A personalized modpack, including optimization mods, with mods & resource packs that enhance the overall visuals of the game, while keeping the vanilla feel! Also comes with settings included so you can skip the most tedious part of modding!
Just Crap ( Adds 💩 )
Literally just adds 💩 to Minecraft
_Gamer_091`s hud
Changes the GUI slightly (heart, food, air and xp icons).
Sign Waypoints
Adds an item that allows you to turn signs into waypoints
Mapbook
This datapack adds 2 vanilla like items related to maps : the map book which stores maps in bulk and the map atlas which keeps your maps organized, allowing you to travel your world with ease.
Protection mod
Server-side overhaul that reworks protection, adds Armor Drain & Fragility, multi-upgrade netherite gear, a full shop + auction economy, Far Lands bots, and admin resistance tools.
Create: Spell Totems
Create: Spell Totems is a Create addon that adds new totems that provide constant potion effects while in your inventory.