Minecraft Java 1.21 Mods
Browse 123,917 free mods for Minecraft Java 1.21 — popular picks include KubeJS EnderIO, WATERMeDIA: Multimedia API, Pineapple Delight.
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KubeJS EnderIO
KubeJS integration for EnderIO.
WATERMeDIA: Multimedia API
Library with an API using VLC for multimedia integration with Minecraft
Pineapple Delight
Take Pineapple to Minecraft!

Enderman Overhaul
Enderman Overhaul adds over 20 new enderman variants, each with their own sounds, models, and animations!
Notes
A clientside mod that provides a fully functional in-game notepad.
Just Enough Breeding (JEBr)
JEI/REI/EMI plugin that displays breeding information
T.O Magic 'n Extras - Iron's Spells Addon
Adds high-quality & immersive spells, boss, weapons, equipment, and MORE! Integrated with L_Ender's Cataclysm, Alex's Caves etc.
Stardew Fishing
Making fishing fun with a minigame directly inspired by Stardew Valley!
Clean Tooltips
Improving Tooltips by creating a clean and consistent look! Durability Tooltip & more!
Underground Bunkers
Randomly generated bunkers hidden within your worlds
Snuffles
Adds Snuffles, a new mob to snowy biomes!
Expanded AE
Adds lots of features from old ae2 versions you may have missed, introduces new ones, and also expands on currently existing things!
Better Days
Gives you control over the passage of time by allowing you to customize the length of the day-night cycle and alters the Minecraft sleep mechanic by accelerating the speed of time.
Man of Many Planes
A set of additional aircraft with Create support in mind.
Interactic
Refined item interactions
Cobbreeding
A side-mod for Cobblemon to add Pokémon breeding early.
Inventory Totem
🎴 Makes the totem of undying effect work when it's anywhere in the inventory.
Easy Elytra Takeoff
🛫 Allows easy takeoff by elytra/colytra with a firework from the ground without jumping.
EnergeticSheep
Sheep that generate energy
Knight Lib
A library that serves as a bridge between mods.
Untitled Duck Mod (Forge)
Ducks for Forge and Fabric! Powered by geckolib and architectury.
Photon Shader
A gameplay-focused shader pack with a semi-realistic style
F.M.R.P
Bring the flair of Fresh Animations into the modded world.
Harder Spawners
Make Spawners harder to break, take revenge when being broken, harder to disable with Light and Limited Lifespan, all configurable
Super Duper Vanilla
A shader pack created to convey the style of the cancelled Super Duper Graphics Pack and other popular Minecraft titles.
Immersive Portals
See through portals and teleport seamlessly
Refined Types
Adds support for Energy, Ars Nouveau and Industrial Foregoing Souls to Refined Storage

E19 - Cobblemon Minimap Icons
Cobblemon icons from MBCMechachu for Xaero's Minimap.
TslatEntityStatus
View entity health and other statuses. Make smacking things fun again!
Borderless Window
Forge mod which replaces the standard Minecraft fullscreen with a borderless fullscreen window
GTBC's SpellLib/API
A library mod and common code storage for all of my mods containing helpful tools to make my life easier with ISS add-on making!
Amecs (Fabric)
Improves your keys & controls setup by providing modifier keys and making multi-functional keys a thing.
Harder Monster Boats (finer boat control)
Allows finer control of monster boat behavior
Twigs
A Minecraft building blocks mod
Petrock - Forge
A mod about Pet Rocks
Samurai Dynasty
New armors and tools with custom 3D-models in a japanese style.