Minecraft Java 1.21 Mods
Browse 12,329 free mods for Minecraft Java 1.21 — popular picks include LiveJava, AUUAOCRAFT, Dynamic Difficulty More Hard.
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LiveJava
a VS Code-powered Web IDE that lets you build multi-class, hot-swappable native Java plugins instantly with zero reloads and automatic dependency injection.
AUUAOCRAFT
Strange devices that seem to have come from outer space...
Dynamic Difficulty More Hard
Level Adjustment for Mobs and Bosses in the DENLAND Modpack by Guzk
Missing Texture Magenta Llamas
Alters the magenta carpet llama decoration to give an all-over missing textures pattern
UltimateSouls
When you kill your enemies you capture their souls and become strong ......

Prabhat's Stock Market
A dynamic Minecraft stock market plugin where players trade item based stocks with real time price changes events dividends and a competitive economy system.
Shizophrenia
Makes you question everything.
Pallas Boy
A wonderful pallas boy that you can tame and shear to get fur/fluff
Yumesumi Economy
一个简单的硬币模组,包含铜、银、金、钻石四种硬币,击杀怪物会掉落。可以通过修编辑配置文件调整设置。Adds Copper, Silver, Gold, and Diamond coins as mob drops. Edit the configuration file to customize settings.
Attack Mastery
Grindy attack skill progression! Kill levelled mobs to level up your Attack Mastery (max 200), gaining up to +1000% damage. Bossbar tracks XP — perfect for RPG servers with Levelled Mobs!

Spider Bow
This project adds a Spider Bow to the combat area of vanilla Minecraft in which being shot by this arrow cobwebs the victim and makes them stuck.
Cubekrowd Pets
This adds CK themed pet skins via nametags
Small Mobs
Turning Mobs into Action Figures with Action Packed Movements!
Axolotl Sterilizer
AxolotlSterilizerFabric - is a server-side Fabric mod for Minecraft 1.21.11 that allows you to sterilize axolotls and prevent breeding.
RedstoneSpawnersReloaded
RedstoneSpawnersReloaded is a very simple plugin which makes Mob Spawners toggleable via a redstone signal.

Craftable petrified oak slab
Added craft to petrified oak slab
Dream Sheep
this mod gives sheep a new dimension and love
Tototerror
Buffs Totodile into a freak of nature
Renewables
Makes some resources renewable like sand and red sand
Progression Reshuffled
A mod that focuses on reworking Minecraft's Progression, from Mob Tweaks to Tool Rebalancing
Frostium
An mod for update snowy biomes, adding Cryorite ore, new mobs, and some structures. Explore the updated snowy landscapes and gear up with themed tools.
villager plus
This project adds new professions to the residents (14 pieces) to such items as: chest, beehive, stove, enchantment table, target, music block, turntable,caster,chalker,bookshelf, patterned base, bee nest, anvil and workbench.
Oxaze
Attempts to add more blocks in the way of parallel universe inspired exploration whilst aiming to remain a relatively vanilla-styled mod.
NaturalMobs
deletes monsters and makes mobs more natural

Assessment
A Minecraft mod based on the video game Risk of Rain 2
Desert - Vanilla Expanded
A mod that adds vanilla friendly desert biomes and features
Zorana's Spawner Mod
A simple mod that adds crafting recipes for the Mob Spawner and some Spawn Eggs.
Shriek Control
A Minecraft mod that gives players full control over which mobs spawn from a Sculk Shrieker. Customize encounters, fine-tune the danger lurking in the Deep Dark.
ItemRush
ItemRush is a Minecraft minigame plugin where players race to find random items before time runs out, featuring progression, rewards, scoreboards, and multiplayer competition.
All looking at you
With this data pack, if you appear within a 15-block radius, they will immediately turn their full attention to you and start looking in your direction.
Panda Paws
Adds Panda Paws to the game, use them to climb, move and take care of your enemies!

The Voobious Mod
a mod that includes some biomes and mobs with recipes and a dimension to go with it
Simple Battlepass
Simple Battlepass for servers that have PVP or anything!
Brad's Pigs
A Minecraft mod that adds crazy pigs. Try it out or you're bacon me crazy.
MobAIReasonDisabler
With this plugin you can disable certain mobs AI , based on the reason they spawned
Pesky Vexes
Datapack that makes vexes not die after 5 min when named preserve