Minecraft Java 1.21 Mods
Browse 110 free mods for Minecraft Java 1.21 — popular picks include Temporal API, Jauml, Quantified API.
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Temporal API
Temporal API is the library for Team Temporal mods, other projects may use it as well.
Jauml
Jauml is a lightweight configuration library for Minecraft mods, designed to simplify JSON-based config management
Quantified API
A high-performance API for Minecraft mods, built to handle tasks efficiently, reduce lag, use GPU acceleration, smart caching, and multithreading - keeping your game smooth and stable.
CobbleBoss
A mod that allows you to infinitely add and customize your own exclusive Bosses in the Cobblemon world.
ZeroCore
A mod intended for other mod authors, it contains a revised multiblock API that support multiple client mods without performance penalities, a new new GUI system, a base BlockEntity implementation that simplifiy data syncronization and much more.
Create: Deployer API
A create library for addon-developers to simplify logistics
CobbleLand Cobblemon Modpack
Looking for a new adventure? Try out our Fabric Modpack! Its an amazing server with hundreds of added pokemon to collect and trade! This modpack includes the bare necessities required to join the server including cobblemon, cobblemounts, and fabric api
Create: Dimension, Steamworks Realm
Create: Dimension, Steamworks Realm introduces a brand-new mining-focused dimension, designed for automation and large-scale resource extraction. This world is filled with rich veins of ores
EpicGuard
Bot protection system for Minecraft servers and proxies
Lusk
Modern, user-friendly skript addon, perfect for beginners and experienced developers.
PlayerProgress
PlayerProgress is a Minecraft datapack that introduces a leveling system. Earn UP from activities like mining and combat to level up and gain new abilities and rewards.
FacilisCommon
Library for Minecraft
CommandBridge
Connect all your servers together and bridge commands across your entire Minecraft network.
MC-Reality Mod
this is a mod for Minecraft that seeks to transform the game experience into something closer to real life. It includes elements such as needs management (hunger, health, energy), an economy system, work, and the ability to interact with other player
Energy-To-Emc
Energy to EMC: A high-performance bridge that seamlessly converts Forge Energy into ProjectE EMC for advanced alchemical automation.
Lite2Edit
Lite2Edit is a small Fabric mod that lets WorldEdit open Litematica schematic files (.litematic).

goPaintAdvanced
The ultimate painting tool for Minecraft
RandomDirtDrops
RandomDirtDrops is a fun Minecraft data pack that makes breaking dirt blocks drop completely random items from the entire game — from diamonds to dragon eggs! Perfect for chaotic survival challenges and OP item speedruns.

Protect
A WorldGuard-like, modern world protection plugin made for API usage
Qa Villager Extends & Waste Innovations
This mod enriches Minecraft with new villager professions, practical work blocks, optimized resource recycling, Qa rosegold, and more.

PerWorlds
A plugin that allows you to store player data per world
Villager Job Tools
Client-only. Reroll any villager's trades (break/place their job site block) until wanted offers appear. Trades Finder, Auto Buy, Auto Sell. Keybinds: K = menu, R = start/stop.
SkHttp
skript addon for http
Redstone Additions
Best redstone&tech datapack, Super optimized, 55+ blocks (Block breaker, block placer, filters, conveyors, item pipes, breeder, generators, gates, chunk loader, wireless redstone, multiblocks, jetpacks and so much more ! )

Hopplet (Hopper Filters)
Expressive hopper filtering, written as plain text. The most powerful plugin in this domain. Filter by any item property. Extendable via a strong developer API.
PySpigot
A Python scripting engine (plugin) for Minecraft servers running Bukkit or one of its forks (Spigot, Paper, etc.).
Replant+
A lightweight and server-friendly mod that automatically replants crops the moment you harvest them.
Customizable Dragon AI
Useful Datapack to customize the Ender Dragon's AI
OpenJavascript
Create custom menus, commands, plugins, systems, basically anything with scripts in Javascript! With multithreading and Folia support! Everything is fully documented in the documentation!
ManualTotem
A simple mod that helps with manual totem placement by automatically moving your cursor to a totem when you open your inventory.
Draventh Ores
⚒ Advanced Tier Ores & Equipment This mod expands Minecraft’s survival progression by introducing 15 new late-game materials, each with full armor and tool sets. The goal of this mod is simple: Extend progression beyond Diamond and Netherite with a struc
More Villages Datapack
Adds more villages to the game.
GregTech Modern Bugs Fix
Fix some bugs of GregTech CEu Modern
Kappa's AntiCheat
A lightweight Fabric anti-cheat designed for high performance on large-scale servers.
Fruitbridge
This mod contains Fruitbridging utilities to assist players. Features are designed for both the Distance and Java 12b leaderboards.
Lag Detective
Lag Detective is a lightweight diagnostics mod that helps answer where the lag is coming from.