Minecraft Java 1.21 Mods
Browse 295 free mods for Minecraft Java 1.21 — popular picks include Cauldron API, Frens, Mobo's Structures.
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Cauldron API
this mod is an api that allows mod creators to create multiple type of recipe that base on cauldron!
Frens
Companion bots for Minecraft with survival skills, autonomous behaviors, and persistent inventories. They can woodcut, mine, fish, build shelters, ride animals, follow and defend, return to base & sleep at sunset.
Mobo's Structures
Pirate Ships! Castles! Dungeons! Towers and More! If you're an explorer, this datapack is for YOU!
AngleTracker
AngleTracker is a mod that helps players precisely track and save their viewing angles (yaw and pitch), making navigation and building in Minecraft easier!
TitanEconomy
The ultimate all-in-one Server Core: Economy, GUI Shop, Auction House, RPG Leveling, Physical Bank Notes, and a sleek HUD. Native support for Paper, Spigot & Purpur.
Ominous Wither
Adds a thrilling boss fight experience, summoned by building the Wither with Bad Omen.
ExplosionProtector
Addon for Coreprotect that protects buildings from explosions if the block was placed by the player
Torridium
A mod that allows torches to set your wooden houses on fire!
Villager Trade Lock
Tired of those players creating a monopoly or heavily crashing the prices of villager obtainable items on your server? Well this plugin aims to limit the speed of building a monopoly/price crashing by locking a villager's trades after opening them.
Combat Master
A powerful Minecraft (Spigot/Paper) combat plugin with advanced combo counter, sounds, miss detection, color system, database and leaderboard.
Base Origin Bugs
Quality of life tweaks to the origins of the base Origins mod by Apace! (Does not fix legitimate bugs with the mod)
Malts
An open-source and free Vaults plugin that incorporates a warehouse for mass item storage.
Happy Ghast Parking
Park your Happy Ghasts to make them stay completely still! A better Happy Ghast mod featuring increased flying speed and mid-air parking (perfect for building)
AntiLitematica
Server plugin blocking Litematica's auto-place to prevent unfair building advantages.
Satisfactory Build Tool
This mod brings the efficient building mechanics of Satisfactory into Minecraft.
Sable: Water Pressure
Realistic depth-based water pressure: the deeper you dive, the more it hurts — unless you're wearing Create's diving armor or building a submarine with Create: Deep seas.
Annoying Pillagers
Find those pillagers hiding in your base
Computer Scientists Begone
Removes Advanced Peripheral Computer Scientists and Computer Houses
MagicWand - Building Plugin
Real-Time Preview Building Plugin, for Java and Bedrock
Economist
The next generation economy plugin with database and multiserver support
Document 17
Document 17 is a mod that adds in; 30+ characters (armors) two double chest's worth of items, a whole assortment of bosses to fight. and new- interesting ways to play the game. along with several base superpowers for players to use. want superheros? here.
TempBuild
Extension to WorldGuard to create temporary building zones. Blocks placed in designated regions automatically decay after a configurable time period.
Ethereal Resonators
A vanilla+ mod that makes player battles more interesting by making castles and other medieval stuff the optimal strategy while also speeding up grind!
DuckyNoGravity
DuckyNoGravity is a lightweight Minecraft plugin that disables gravity for blocks like sand, gravel, and concrete powder, allowing creative building without falling blocks.
Steroid Planet
Steroid Planet adds a high-stakes bodybuilding system to Minecraft! Unlock tiered steroids (I/II/III) to boost muscle mass, reduce body fat, and chase extreme milestones.
Robot Gardener
Replaces Iron Golem with a Robot Gardener from the "Castle in the Sky" film
Arcforge
Arcforge is a bold modpack blending magic and mechanics, ancient and advanced. Whether mastering magic, engineering redstone, exploring new dimensions, or building grand cities—Arcforge gives you the tools to forge your path.
Totem Rebalance
Totems can only be obtained from evokers in mansions and ominious vaults.
Minecraft-The CATASTROPHE mod
Adds new bosses to the base game, and overhauls the progression
HitRangeActivity
A mod featuring visual enhancements and combat utilities (particles, PotFix, and sounds). A mod based on BetterHitReg, which has been modified for legitimate use. Base version 1.21.11
Ferrora
Ferrora is a community-driven server pack built for catching, battling, and building in Minecraft. Featuring Cobblemon, player-run gyms, towns, breeding, and classic mechanics like Mega Evolution and Dynamax.
Opaque
Build with glass like it’s a box of coloured candy. Opaque adds a full set of glass building parts in every vanilla glass color (plus clear): doors, trapdoors, fences, fence gates, and stairs. They look airy light and bright
LifeSteal Lite
A lightweight, high-performance LifeSteal solution with fully customizable crafting recipes, native ban management, and zero database requirements.
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.
Palettable
Adds an in-game color gradient creator, aimed at making building more relaxing and digestible.
Toms Server Additions: Bouncy Castle!
Serverside colourful bouncy blocks!