Minecraft Java 1.21 Mods
Browse 751 free mods for Minecraft Java 1.21 — popular picks include Artilide, Glowing Mushrooms, Grandia Dungeons [Modpack].
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Artilide
Artilide is a modpack that attempts to transform Minecraft's balancing and base mechanics to keep survival aspects for late game, along with overhauling exploration as a whole.
Glowing Mushrooms
a mod that adds glowing mushrooms to the game
Grandia Dungeons [Modpack]
A dark fantasy dungeon roguelike modpack with bosses, classes, cursed loot, magic, custom UI and atmospheric progression.
Neatly Compatible
Make Minecraft compatible for everyone
Illuvia Prime Project
A modified version of the Technical Electrical: Secret Schemes Modpack by waddon1. Modified to have some additional features like PlasmoVoice for the Illuvia Prime Minecraft server.
Aetheria: Age of Oblivion
This is a Dark Fantasy RPG-style compilation with an emphasis on complex combat, exploration of dangerous dungeons, and magic.
Enhanced Vanilla Experience
An Enhanced Vanilla Minecraft Experience
ALTARA
ALTARA is a Minecraft mod that adds new items, tools, and mechanics to make the game more exciting and diverse.
NoPorkChops
NoPorkChops is a very basic mod that applies all current negative effects to you with maximum amplifiers after eating a porkchop.
Hearth & Horizons
Hearth & Horizon combines cozy homesteading with a immersive tech, from early survival and farming to electricity, factories, vehicles, and airships. Build a base, grow it into a working settlement, and eventually turn it into a connected industrial world.
Some Dungeons Artifacts
This datapack adds some of the Artifacts from Minecraft's Spin-Off, Minecraft Dungeons

Drinks and Draughts
A datapack that adds 44 new drink recipes to the game, each with special effects and uses, as well as an extra recipe for sugar.
mc mod #5830536
A small datapack meant for small casual worlds with some custom items, some changed/new game mechanics, and more. Hell.
The ShadyBunch
Ever wanted to explore magic as a law-loving scientist? Command airships by night and be an interior designer by day? Or, a Pixelated chef running two restaurants in your new metropolis city? It can all be yours! Step into the shade, lets bunch together!
Cures and Concoctions
Create cures for various status effects in Minecraft!
StarCraftFantasy
StarCraftFantasy is Fabric 1.21 Fantasy Modpack

Jurodedu
A table sink(-ish) modpack revolving mostly around both having fun and an operational computer.
Potato Perks!
Potatoes that give you super powers!
Chikem Mod
Chickem Where It has Special Power & Hoomans Can Ride it. Ride special chickens, breed rare variants, and find GolChick loot in treasure sources.
JEO - Kasai Edition
Modpack With optimalization and Membercat Studio's Mods and textures
In the Journeys
The mods expand Minecraft further with new ores, mobs, biomes, dungeons, bosses, and magic to discover.
Clockwork SMP Modpack
Clockwork SMP is a Create Mod based feature-packed modpack for anyone!
Amethyst Apple
Amethyst Apples that gives you haste when Eaten

Progressive Hearts
Adds three permanent progression apples that grant extra hearts forever. Inspired by the permanent improvements of Terraria's Calamity Mod and Infernum Mod
XMyIsland
A comprehensive island management plugin that brings robust protection, intuitive GUI management, and economy integration to your Minecraft server.
WWW vibe
Modpack aimed at vanilla, without magic and mechanisms. So that traveling doesn't seem like an afterthought.

Seafood Boil
Makes the Nautilus edible! (And mollusks huntable)
PotionBrewingDisabler
Disables specific potions in the brewing stand, configurable via config.yml
EnchantedSteak
Adds custom enchanted steak granting Haste effect.
BetterMC:RPG-Rises
Ever wanted to create the Ultimate RPG experience? Turns out you don't have to anymore!
Advanced Compounds & Alloys
AC&A is a very large mod mainly based around science. It is MOSTLY scientifically accurate, but of course not completely, some things are simplified for gameplay (though not massively) and some things I have not been able to find good sources.
CorruptionCraft
A plugin that challenges players. Random events can occur. (no Spoilers!)
Fromage
A detailed cheesemaking mod with cow, goat and sheep milk, cultures, curds, whey, cheese presses, aging racks and many unique cheeses
Zero's Bunch O' Stuff
A relatively basic mod that currently expands on amethyst uses and sculk expansion, with more to come!
FeedCommand
Feed yourself with command
sanwichstats
Craft consumables that allow you to change your stats & gain interesting abilities (for a price).