Minecraft Java 1.21 Mods
Browse 3,674 free mods for Minecraft Java 1.21 — popular picks include Stay Young, Progressive No Structures, Ride Any Mob.
Updated daily
Stay Young
Keep animals small/baby
Progressive No Structures
This datapack allows you to make progress and even beat the game in worlds with Generate Structures disabled!
Ride Any Mob
Mount and control every mob in Minecraft!
Laicaps
[Alpha] A fantasy space exploration mod - for neoforge 1.21.1
Insane's Explosion Overhaul
Enahanced explosions with bigger knockback, apply potion effects from exploder and experimental flying blocks
More Dyes
A minecraft mod aiming to infinitely* extend the range of available colored blocks.
Reduced Enderman Griefing
Prevent Enderman from picking up world surface blocks

Playerless Continued
Mobs drop XP & loot regardless of death cause. Continuation of jadc's playerless for 1.21.x.
Crystal Town Mod
A mod that adds a slightly elaborate universe! A couple of dimensions, lots of interesting mobs, progression, magic wands and toxic weapons!
Butch - Mob Drops Reimagined
Butch overhauls the mob drops of various mobs to be more involved but more lucrative and adds more uses to some lesser used mobs.
Trial Spawns Dont Disable Themselves
Stops custom made trial spawners from disabling themselves after a single use
Cobblemon Ditto HMs
Learn Ditto's (Pokopia inspired) HM abilities yourself - cut, fly, surf, teleport and more, fueled by hunger or XP. A Cobblemon add-on for Fabric + NeoForge.
The real peaceful mode
This datapack makes all creatures non-hostile towards players.
UltraSpawners [LITE]
UltraSpawners is a lightweight spawner management plugin featuring basic stacking, simple trust permissions, and economy based mob unlocking, designed for survival and economy servers.
Happy Ghast Tiers
Are your Happy Ghasts getting you down? Well wipe those tears away with Happy Ghast Tiers! This datapack adds five new tiers of harnesses each providing a small but noticeable speed boost. And as an added bonus we've added Ghast Treats!
Creeper Nerf
Stops creepers from breaking blocks and damaging entities, but adds a lot of knockback!
Alkatraz Magic
Advanced Magic Plugin
End Phantoms
Simple datapack adding phantoms to the end.
NoMobGriefing
Prevents mobs from griefing
Ornithia
Adds birds, tameable owls, sickles and straw.
Items & Mechanics Classic (Re-Classic Addon)
This mod adds many items with various functionality, armor and more (with old textures)
No Iron Golems Spawn
Disables the spawning of iron golems caused by villagers, spawn eggs, or commands. Iron golems can only be spawned by building them manually.

Next Level Twitch Integration
A mod for streamers to use, Allows chat to cause chaos
Depth Based Creeper Griefing
Creepers don't damage surface blocks, but are more dangerous deep underground

Wili's Pikmins
Adds Pikmin and Pikmin-related features for a personal modpack/server
OptiFoundry
Optimize chunks, entities, and ticks
Advanced API
AdvancedAPI provides very simple code, for example, ItemBuilder or SimpleInventory, which can be used to create things faster. ONLY FOR PLUGIN DEVELOPERS
Mild's Armored Elytra
A data pack that changes the overpowered concept to a vanilla friendly, balanced feature.
Don't Hurt Others' Pets
Prevents people from hurting pets that don't belong to them
Spawner wrath
🗸 If you break the spawner, there will be consequences! Namely, 3 mobs will appear
Mobs' Equipment Will Be Damaged│生物的裝備會損壞
When mobs use equipment, the durability of the equipment will also be reduced.│當生物使用裝備時,裝備的耐久度同樣會降低。
Doors Invasion
Doors entities and items made their way into your world!

Hyrinity (Legacy)
An overall content mod adding progression, bosses, dimensions and more!
Project Extinction Datapack
Extends the abilities of the Project Extinction resource pack.
Better Entity Control
Take full control over mob and projectile attributes — modify health, damage, speed, armor, knockback, scale for mobs, and damage, speed, gravity, knockback for projectiles, with commands in Russian and English.
Skulk Dimension
This Mod Adds New Dimension , structures and more!