Minecraft Java 1.21 Mods
Browse 212 free mods for Minecraft Java 1.21 — popular picks include Vertical Slab Placement, Sharpness Particles Refurbished, Create: Cats Don't Care (CCDC).
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Vertical Slab Placement
Allows all vanilla slabs to be placed vertically.
Sharpness Particles Refurbished
A sharpness particles & particle multiplier mod for Fabric. (Refurbished)
Create: Cats Don't Care (CCDC)
Lets cats find cozy spots to sit and sleep around your Create factories.
Instant TNT
Tired of waiting for the TNT to explode? Instant TNTs available now!
Lower My Paths and Slabs!
Lowers blocks on top of anything (such as slabs). Configurable and toggleable!
Legacy Landscape
Legacy landscapes for your lugubrious level.
Image Previewer
Preview images in chatbar easily, efficiently. (No resourcepack needed)

MCAI
MCAI is a mod that serves as an intermediary between Minecraft and Character AI.
The Rift
Adds a Stealth dimension with multiple additives to after end game progression!
Global Emeralds
Unlocks Emerald Ore to spawn in all biomes.
Smooth Particles Reborn
Adds the functionality to spawn particles when you place a block (reborn)
Classic Combined
This mod creates a Classic Minecraft/Modern Minecraft hybrid experience. Recreates modern features in a Classic Minecraft/Alpha Minecraft style. Fully Survival compatible
Invisi Blocks
Fake Blocks you can Walk Through!
More Soups Mod
New vanilla-style useful soups with many new effects like lucky block, and country-themed food (from stardew valley, horror mods, terraria and popular brands)
Avaritia: Nirvana
Avaritia: Nirvana is a Minecraft mod built around the concept of "infinity." Inspired by Avaritia, it offers ultimate-tier equipment, tools, and materials that transcend the limits of vanilla gameplay.
PySpigot
A Python scripting engine (plugin) for Minecraft servers running Bukkit or one of its forks (Spigot, Paper, etc.).
Dirt Conduit
Removes the Prismarine Block restriction from conduits
FNAF Dreams and Nightmares (Work Game)
Mod will recreate the creepy atmosphere of FNaF 4
Backrooms: The Complex
A survival friendly, lore accurate backrooms mod with high quality visuals.
Glow Sheep
Adds Glow Sheep.
Sizechange
This Datapack add some totems and shields that when held make you big or small, and they are expensive.
Potatomod
The potatomod is a funny and unlogical mod.
Make It Rain!
Client-side mod that adds rain to normally dry Overworld biomes

InvisibleKiller
InvisibleKiller is a lightweight Paper plugin that replaces death messages when the killer was invisible, preventing players from knowing who killed them.
Draventh Ores
⚒ Advanced Tier Ores & Equipment This mod expands Minecraft’s survival progression by introducing 15 new late-game materials, each with full armor and tool sets. The goal of this mod is simple: Extend progression beyond Diamond and Netherite with a struc
Verdant Growth
A spreading plant growth threatens to overtake and convert all matter in its path. Either fight it or join it!
Grave Bane
A mod that adds cool new blocks from Minecraft Dungeons to spice up your world. This mod includes a variety of new blocks. <3
The Gay Mod
This mod adds a new diamond called Gaymonds that can drop while mining diamonds.
More Villages Datapack
Adds more villages to the game.
BasicallyParticleModels
a not very simple serverside fabric mod that can display 3d models as particles
Craft Sponge
Adds a crafting recipe for sponge
B's KnockOnDoor
A simple plugin for roleplay. With this, you can knock on your friends' doors.
Kappa's AntiCheat
A lightweight Fabric anti-cheat designed for high performance on large-scale servers.
Deepcraft
A hardcore Minecraft mod with new ore, weapons, bosses, mobs, a unique dimension, haunting music, and forgotten secrets waiting to be uncovered.
ULTRADEATH Animation
Replicates the death animation from ULTRAKILL in Minecraft!

Translucent Lava
simple mod which makes lava look like water