Minecraft Java 1.21 Mods
Browse 114 free mods for Minecraft Java 1.21 — popular picks include Cyclops Core, Translucency Fix, Berezka API for Horror Elements mod.
Updated daily
Cyclops Core
Library mod for EvilCraft, Integrated Dynamics and others.
Translucency Fix
Because Mojang doesn't want to
Berezka API for Horror Elements mod
This mod adds config to Horror Elements mod mod
CICADA Cape Fix
Removes the ugly 'pls update cicada' cape from older versions of CICADA
Curtain
A Forge mod like fabric-carpet
Kilt
Allows the loading of (Neo)Forge mods in the Fabric ecosystem. Very experimental.
BTWR: Shared Library
A library mod for the "Better Than Wolves: Remastered!" project.
ExecutableItems
Custom Items, ExecutableItems plugin allows you to fully customize every aspect of your items, and adding unique activators on your items !
Nightmare's Tensura Utils
This is a library mod filled with utils for addon devs to use for the Tensura Mod.

Goop
Adds Slime and Splatter Visual Effects to Minecraft
Item Components
Change the default components for items! Server-side and data-driven, refreshes on /reload! (and does it properly)
Hollow Realms
Hollow Realms is a horror mod that plunges players into a twisted, decaying dimension where unsettling creatures, eerie mysteries, and a constant sense of dread lurk around every corner.
Piglin Conservatory v3.0
Adds a news structure to the Nether, The Piglin Conservatory, along with a new Obsidian Apple, Dragon Fruit, Toxic Mushrooms, Hoglins' Fossils, Corrupted Emerald and a New Music Discs!
DreamMasaAddition
An add-on mod for Masa's mods, Tweakeroo, etc.
ViaAprilFools
ViaVersion addon to add support for some notable Minecraft snapshots.
Create: Dimension, Steamworks Realm
Create: Dimension, Steamworks Realm introduces a brand-new mining-focused dimension, designed for automation and large-scale resource extraction. This world is filled with rich veins of ores
*NEW* VM computers
This project adds working computers as virtual machines in Minecraft, this is a fan made port of original VM computers by Delta2Force
PlayerProgress
PlayerProgress is a Minecraft datapack that introduces a leveling system. Earn UP from activities like mining and combat to level up and gain new abilities and rewards.
World Loading Tweaker
Allows you to change the spawn chunk radius of Minecraft, either speeding up loading or improving spawn quality
Brutal Nightmare Config Integration
Add global config menu for Brutal Nightmare
VS Unofficial Neoforge Port
An unofficial NeoForge port of the Valkyrien Skies 2 physics engine to Minecraft 1.21.1.
Item Commander
A simple Serverside Fabric mod that allows you to assign commands to Item(Stacks)
Mob AI Commands
A standalone version of the commands added by Mob AI Tweaks mod
GachaAddiction
Every time you open a chest, it's a gacha pull. The reel spins, a rarity glow flashes — how's your luck today?
Matthiesen Core
A library mod for NeoForge and Fabric that enables developers to create mods with a shared common codebase.
Passionfruit API
A core lib for most AceCommander492 and TheDeadlyDevil09s mods. Adds a secret crafting recipe for a passionfruit.
Mini Tardis: BOTI
A work in progress addon for Mini Tardis to provide Immersive Portals integration.
Deltapack
A deltarune datapack adding content from dark fountains and dark worlds to the roaring knight. As well as items and spells like snowgrave and the shadow mantle.
RandomDirtDrops
RandomDirtDrops is a fun Minecraft data pack that makes breaking dirt blocks drop completely random items from the entire game — from diamonds to dragon eggs! Perfect for chaotic survival challenges and OP item speedruns.
Fabric Placeholder
A placeholder mod that provides the "fabric" mod ID for older mods.

Silicate
A library providing powerful client-server-agnostic predicates with a simple API.
1HP Challenge
1HP Challenge, without the ability to resurrect even using commands.
Eureka! (Unofficial Port)
An unofficial NeoForge port of Eureka! Ships to Minecraft 1.21.1.
ScoreboardPL
A fully customizable scoreboard plugin with 25+ placeholders — supports Vault, LuckPerms, live TPS, coordinates, stats and much more.
anti chest esp donut smp
DonutAntiChestESP Advanced Chest Visibility Protection for Minecraft Servers
Reload World Button
Speed up reloading a world to allow for quicker dynamic registry changes. Client-side & Singleplayer only!