Minecraft Java 1.21 Mods
Browse 54 free mods for Minecraft Java 1.21 — popular picks include Cardinal Components API, Carbon Config, Radical Cobblemon Trainers API.
Updated daily
Cardinal Components API
API for data-driven content
Carbon Config
IC2Classics Config Library
Radical Cobblemon Trainers API
Trainer management and battle API for Cobblemon.
Underlay
Place any block (such as carpets) inside anything!
CarrasconLib
A library for ECarrascon Mods
Track API
A compatibility layer for train mods
Sewing Kit
Adds a Sewing table and mechanic similar to the vanilla cartography or stonecutting
Immersive Vehicles Trin Part Pack
Trin Part Pack - the full part collection
caramelChat
Provides an enhanced CJK(Chinese, Japanese, Korean) IME input experience in Minecraft.
[FVTM] Fex's Vehicle and Transportation Mod
A vast addon-based mod allowing you to create Vehicles, Containers, Items, Blocks, Food/Drinks, Clothes and more!
Tensura Compat: FTB
A compatibility brigde between Tensura: Reincarnated and FTB mods (including FTB Library, FTB Chunks, FTB Teams and FTB Quests).
Curtain
A Forge mod like fabric-carpet
Apothecary - Potion Expansion
A potion expansion with a large variety of different effects!
Carpets Core
Simple lib for creating multifaced carpets
Carpet mace fix
This mod fixes bug #2108 in the carpet mod.
Carpet crit fix
This mod fixes the problem where fake players don't perform critical hits
Tensura TR Javascript [ Abandoned ]
Fixes the Tensura Reincarnated Mod, Makes it Scriptable, Heavily Improves It

Auto TNT Cart
One‑click instant TNT minecart trick: press C to place rail, spawn TNT minecart, and shoot a flame arrow. Requires Fabric API.
Sable AABB Fix
Fixes crashes and console spam from abnormal AABB coordinates when riding vehicles
[Cobblemon] TrainerAttributesLib
Integrates Minecraft's attributes with Cobblemon.
Trin Part Pack - custom parts for Immersive Vehicles
Adds many parts, decors, and more, to customize, tune, or improve your Immersive Vehicle cars and trucks from all packs!
Physical Vehicles
A REAL physically accurate vehicle simulator on a datapack! You can arrange physical races, drift challenges and RPG situations!
Quirky Vehicles Framework
Mod framework providing tools for easier implementation of multipart and multiplayer-movable vehicles
Vulgar's PvpBot
Pvpbot is an mod that uses carpet as a dependency it adds players that can be summoned through commands, these players have advanced combat ai and can be used to practice PvP (Player Versus Player)
Simple Orbital Cannons
Circuit & Cartridge is a NeoForge 1.21.1 military simulation framework featuring advanced redstone, drones, orbital weapons, electronic warfare, and a public addon API, built for hardcore SMP and mil-sim servers.
ColorableLib
SuperbWarfare library for easy vehicle coloring.
Village Healthcare EX
A port of HyperPigeon's Village Healthcare to Architectury
Tyr's Minecart Speed Fixes
An overengineered minecart default speed tweaker, with lots of configurable options!
Carpet Permissions
Adds fine-tunable permissions for carpet (replaces op level check)
Carpetlogging
Allows almost every non solid block to be covered with carpets in a dynamic way !
Mob head to Player head
Using this datapack, you can turn any mob head into a player head simply by using a Book and Quill along with any mob head in the game, such as a zombie head, a dragon head, or even a Carved Pumpkin.
WildCards SMP
A WildCards SMP plugin. Add Unique ability cards to your SMP.
Umbraix Jobs
A modern, feature-rich jobs plugin for Minecraft servers, offering customizable careers, dynamic missions, team play, and a sleek GUI—built for performance and player engagement.
Sable Cars
Adds driveable, physics-simulated cars to Minecraft using the Sable physics engine and GeckoLib for animations.
RealCarry Plugin
Tired of limitations? RealCarry brings a new level of immersion and utility to your Minecraft server!
Lanitium
A Carpet extension with useful and advanced features