Minecraft Java 1.21 Mods
Browse 109,629 free mods for Minecraft Java 1.21 — popular picks include Iridium Skyblock [1.13-1.21.10], Multi World Borders, AL's Piglins Revamped.
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Iridium Skyblock [1.13-1.21.10]
A New Era of Skyblock plugins
Multi World Borders
Makes world borders work per dimension

AL's Piglins Revamped
A pack that revamps Piglins and Hoglins and adds more variants!
Linked Chests
Effortless linked storage — access the same inventory from any chest, any place, any time!
Cobblemon Utility+ (IVs, EVs, & More) NO RECIPES
Adds utility items to Cobblemon for a better experience

Map Link (formerly Remote Player Waypoints for Xaero's Map)
Downloads and converts tiles and synchronizes players, markers and area overlays from Bluemap, Dynmap, Pl3xMap or Squaremap with Xaero's Minimap and Worldmap. Also displays AFK time in the tab list.
Cozy Foods: Milk Tea
Build your own cottagecore café! Stand-alone cooking and decorations mod with boba tea, mango trees, bunny ears and more. Compatible with Farmer's Delight and others.
Cobblemon Trainer Battle Commands
Provides commands to manage trainers and start battles that can act as interface for other mods (e.g. Easy NPC).
Additional items for Cobblemon
Gen 1-6 and Orange Leaguebadges and a shiny gem item. Shiny gem can be crafted into shiny gem collection and back.
Cliff under a Tree (Clifftree) - Mod Version
A vanilla-styled worldgen overhaul, with new biomes and touches to existing ones
Simple Custom Early Loading
Allows to customize the Neoforge and Forge early loading screen

Cobblemon Extra Data
Cobblemon side mod that implements more data such as Met Date, Met Location and Met Level
Flywheel Version Fix
BugFix of required flywheel mod 1.0+
Create: Delivery Director [Discontinued]
Adds a bunch of new features for Create Packages
DucLib
An animation and model library for minecraft entities.
Create: Ars Nouveau Compat
A compatibility mod that integrates Ars Nouveau with Create

Veil
Upgrade your modding potential with cutting-edge rendering and game-engine features. Built for modders, by modders.
Axolotl-Totem
Totem in the form of Axolotl

Create Train Parts
Adds functional blocks as decoration

Cobblemon: Run & Bun(Advanced Trainer AI)
A much more advanced trainer AI API following the Run and Bun 1.07 community doc and beyond. Dependent on Radical Cobblemon Trainers and COBBLEMON 1.7 Replaces RCT API
Hafen - Simplistic
A colorful pack inspired by video games!
Remove Fog
Remove all fog in game.

Super Tools Reload
This mod adds in a bunch of new items that are EXTREMELY (yes, extremely) OP. This includes tools, armor, food and blocks. This mod is just used to add new items and the functionality is just like most mods.
Epic Knights: Ores and Alloys
A mod that adds materials and tools for bronze, copper, tin, silver and steel

Create: Wizardry
This is an addon mod for Create adding enhanced compatibility with Iron's Spells and Spellbooks. Happy spellcasting!
(Bee's) Banner Pattern Clarity
Retextures of banner pattern items, compatible with mods
Tensura:No Game No Life
Tensura mod affiliate
Classic Sword Blocking
This mod adds the ability of blocking with a sword.
Tinted Dyes
Overhauling Minecraft's Dye System + New Dyes

Chat Calc
The *fastest* calculator around; built right into your chat; just type in and you'll see your answer!
Ultimate Lucky Oneblock
Lucky block Oneblock, enhanced with automation, machines, gear, bosses, and QoL features.
Cobblemon Mythical Collection
Adds all mythical pokemon to natural spawn
No Random Ticks
Prevent blocks from performing randomTick() or even tick()
Your Items Are Safe
💀 Spawns a chest and armor stand with player items on death, a gravestone alternative.
Agility Enchantment (Fabric/Forge/NeoForge/Quilt)
New enchantment for leggings that's increase your step height!

Sable: Physics Compat
A Compat mod for Sable/Aeronautics providing tags for several modded blocks.