Minecraft Java 1.21 Mods
Browse 3,633 free mods for Minecraft Java 1.21 — popular picks include Profession Locking, NoreStages, Essence Reborn.
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Profession Locking
Prevents villager re-rolling / cycling to get the best trades!
NoreStages
Datapack-driven progression stages for increasing player and world difficulty with individual mob attribute altering

Essence Reborn
This plugin allows players to be imbued with the Essence of the mobs which they have slain, giving them special abilities!
simulator infection epidemic crisis
apocalyptic zombie infection simulator that transforms servers into a pandemic survival experience. Features progressive infection spread, contaminated players, quarantined villages, multiple zombie variants, vaccine crafting, and crisis events.
CreatureCapture
Turn mob hunting into a collection challenge!
Population Control
Changes the mob spawning and bed mechanics.

SpyGlassMeData
Datapack that is used by the SpyGlassMe mod.
Kill or die
A recreation of the datapack used in NewKiddo’s “Kill or die” series
StickMenu
A simple plugin to make using commands in AdvancedTeleport much easier for console and mobile players.
Sheep Behavior Reversion
This datapack reverts the 1.21.5 update changes to sheep behavior, preventing them from eating short grass, ferns, short dry grass, and tall dry grass.
Stellarity_x_True_Ending_patch
Compatibility layer for seamless integration between Stellarity and True Ending datapacks.

randomitems-mod
Adds /randomitems, /randommobs, /randomweapon, /randomarmor, /randomtool and /randomquest commands that periodically give random items, spawn random mobs, swap your gear, or assign 5-minute random quests with a boss bar and personal sidebar.

Craft Team
Adds a team system inspired by Terraria's. Also lets you tame mobs and have them fight with you! Fork of Mine Team.
technis
TECHNIS is a voice-activated AI assistant for Minecraft 1.21.4 - like Jarvis. Speak to the mic, TECHNIS sees your inventory, health, mobs, and replies with speech. Animated orb HUD, proactive alerts, info panel, in-game config. Requires Groq API key.
Visual Identification
Lightweight and configurable server side block and entity information UI based on player's line of sight. Displays configurable information such as block name, block ID, mob health...
Cats but better
This mod adds various cat-based items to the game such as catmint, and cat based weapons, and a new cat mob!
PiglinSMP
Transforms Piglin Bartering into a custom loot system. 7 unique weapons with special mechanics. 🐷
HardEndure
Minecraft but harder and very brutal...
No Xp Spawner
Disable XP from mob spawners and trial spawners.
Doner Villager
Adds a Doner and shawarma making villager proffession
Evoker Prevention
Prevents Evokers from spawning.
Vindicator Prevention
Prevents Vindicators from spawning.
MineTweaksX
The plugin aims to add tweaks that will simplify the game and could be added to the game.
Villager Repellent
A lightweight plugin that lets you repel villagers from using specific beds and workstations.
Overlord_guardian
want more difficulty? more mobs? this datapack has it all plus a designated guardian that can be every mob!
Teggs Happier Ghasts
A feature to make Ghasts a little bit quicker when holding a snowball in the off-hand
Ablitys
Ablitys Adds explosion to your game! To kill monsters. And Destroy things!
dogshealth
Synchronizes the player's maximum health with the number of their alive dogs
BoomPhantoms
Just a phantom… until it explodes 💥
Mythicmobs Block Drop Add-on
This will let you add mythicmobs drop when breaking block with custom amount and chance
Mob Bloom
A small Vanilla+ mod that not only adds a new engaging way to create mob farms for hostile mobs.
Last Resort Soup
Adds an insanely OP stew that is meant as a last resort when all else fails
SnowmanBro
Take control of your own snowman buddy, launch snowballs, and turn your world into a chaotic snowball fight playground.
Genetic Modifications (GenMod)
An origins style datapack that adds 6 craftable genetic modification syringes.
Quality of Laik
Adds a lot of quality of life changes to as much of the game through datapacks as possible!

Alex's Mobs fishing
Adds items from "Alex's Mobs" mod to fishing loot tables.