Minecraft Java 1.21 Mods
Browse 309 free mods for Minecraft Java 1.21 — popular picks include Cauldron API, Sable: Water Pressure, 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!
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.
Mobo's Structures
Pirate Ships! Castles! Dungeons! Towers and More! If you're an explorer, this datapack is for YOU!
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.
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!
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)
ExplosionProtector
Addon for Coreprotect that protects buildings from explosions if the block was placed by the player
Ominous Wither
Adds a thrilling boss fight experience, summoned by building the Wither with Bad Omen.
Computer Scientists Begone
Removes Advanced Peripheral Computer Scientists and Computer Houses
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!
AntiLitematica
Server plugin blocking Litematica's auto-place to prevent unfair building advantages.
Malts
An open-source and free Vaults plugin that incorporates a warehouse for mass item storage.
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.
Torridium
A mod that allows torches to set your wooden houses on fire!
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)
Satisfactory Build Tool
This mod brings the efficient building mechanics of Satisfactory into Minecraft.
MagicWand - Building Plugin
Real-Time Preview Building Plugin, for Java and Bedrock
Annoying Pillagers
Find those pillagers hiding in your base
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.
TempBuild
Extension to WorldGuard to create temporary building zones. Blocks placed in designated regions automatically decay after a configurable time period.
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.
DuckyNoGravity
DuckyNoGravity is a lightweight Minecraft plugin that disables gravity for blocks like sand, gravel, and concrete powder, allowing creative building without falling blocks.
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
Region Selection Viewer
A WorldEdit and Axiom selection viewer for precise building and visualizing in Mini-maps.
The watcher is a killer
This is a horror mod there are 4 observers, each of them has his own house, but I advise you not to enter there and there is a chance to die and start playing around with the mod, you will see for yourself after installation
Robot Gardener
Replaces Iron Golem with a Robot Gardener from the "Castle in the Sky" film
Totem Rebalance
Totems can only be obtained from evokers in mansions and ominious vaults.
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.
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.
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
Minecraft-The CATASTROPHE mod
Adds new bosses to the base game, and overhauls the progression
LifeSteal Lite
A lightweight, high-performance LifeSteal solution with fully customizable crafting recipes, native ban management, and zero database requirements.
Biome Bound Blocks
Certain building blocks can only be placed in their native biome, encouraging architectural harmony with the environment.
Boundless Blocks
Craft infinite building blocks from any mod. Never run out of materials again!