Minecraft Java 1.21 Mods
Browse 108,514 free mods for Minecraft Java 1.21 — popular picks include Inventory Pets, Almanac Lib, Mutant Monsters.
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Inventory Pets
Inventory Pets are living animated creatures that exist in your inventory and give you amazing special effects, drops, buffs, utilities, defenses, and weapons in exchange for care and feeding.
Almanac Lib
A loader independent library containing shared code reused between mods and a fix for empty nbt issues.
Mutant Monsters
The mutants are back! Face scary creatures and powerful beasts like never before.
Project Red - Integration
Integration module for the Project Red series
ExtendedAE
Adds some QoL contents for AE2
EMI
Featureful and accessible modern item and recipe viewer with JEI compatibility
Multi-Piston
Multi-directional Piston Block
Scalable Cat's Force
Scala language provider for Minecraft 1.13.2 and newer
RSInfinityBooster
Added Infinity Range Card
Login Protection
Protects the player during login from any harm
Allthemodium
Custom new ore plus fun new items.
Solar Flux Reborn
Adding solar panels into Minecraft. A reborn of Solar Flux mod.
Waddles
Waddles adds cute Adélie penguins that waddle
Simple Discord RPC
A simple to use RPC plugin for Minecraft and Modpacks
Colorful Hearts
A client side mod that replaces multiple vanilla heart rows with a single row using colored hearts
Catalogue
A universal mod list menu for all modloaders!
Iceberg [Fabric]
A modding library that contains new events, helpers, and utilities to make modder's lives easier.
Enhanced Celestials - Blood, Blue, & Harvest (Super) Moons
A mod adding new Lunar Events like blood moons and harvest moons!
Antique Atlas
Antique map featuring infinite scrolling, zoom and custom labeled markers.
End Remastered [NeoForge/Fabric]
Make your journey towards the End more challenging and engaging with End Remastered!
Mahou Tsukai
A magic mod focused on special effects and spell uniqueness
ExpandAbility
Library mod that provides increased control over vanilla effects and abilities
Upgrade Aquatic
Further upgrades the Update Aquatic with more aquatic additions!
EvilCraft
An evil mod for Minecraft.
LambDynamicLights
The most feature-complete and optimized dynamic lighting mod.

oωo (owo-lib)
A general utility, GUI and config library for modding on Fabric and Quilt
FlickerFix
Disables nightvision flickering
Combat Roll [Fabric & Forge]
🧶 Adds combat roll ability, with related attributes and enchantments.
Biome Music
change delay between music, more varied music, fix modded biomes not playing music
Sit
Allows you to sit on slabs and stairs.
The Conjurer
A mod that expands the Illager family by adding a new Magician illager called The Conjurer.

Kotlin for Forge
Adds a Kotlin language loader and provides some optional utilities.
Project Red - Illumination
Illumination module for the Project Red series
Extra Disks
Extra Disks adds bigger disks to Refined Storage 1.14+
libIPN
Gui/Config Libarary for Inventory Profiles Next and related mods
More Villagers
Adds new villager jobs, with unique trades, workstations, and advancements!