Minecraft Java 1.21 Mods
Browse 3,588 free mods for Minecraft Java 1.21 — popular picks include CC: Advanced Math, AutoMessageSystem, Ai Helper.
Updated daily
CC: Advanced Math
A datapack adding advanced mathematical libraries to CC: Tweaked!
AutoMessageSystem
Full auto-message system! Chat, BossBar, Title and ActionBar! PlaceholderAPI support!
Ai Helper
Chat with AI directly in your Minecraft world! Transform your Minecraft experience by bringing the power of artificial intelligence right into your game. No more alt-tabbing to ask questions or get help
EaglercraftXBackendRPC
Eaglercraft server RPC API plugin for Spigot
Simple Voice Chat Player Voice Recorder (Server-Side)
SimpleVoiceChat Player Voice Recorder (Server-Side) Record Minecraft players’ voice chats on the server using the official Simple Voice Chat API. Saves decoded audio in timestamped files organized by player UUID. Reliable, efficient, and easy to use.

VelocityPlus
Velocity proxy adding and change commands
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.
G1axFixer
G1axFixer is a client-side Fabric mod that fixes resource pack crashes and optimizes network, rendering, and ticking for maximum FPS and smooth combat.
Vulgar's Orbital Strike Mod
Adds rods that strike tnt upon ur enemies, an dependency for my pvpbot mod but can also be used normally.
Mini Block Miners
All updated Mini Block Miner Farms!
InfiniteCropsRegions ⭕ InfiniteCrops Dependency ⭕ Custom Crops | Ore Bushes | Money Trees
This is a Dependency for InfiniteCrops thats needed to run the Premium Farming plugin Infinite Crops
Greg's Team SMP
A lightweight team & claim plugin for Minecraft SMPs. Manage your territory, protect your land and dominate the map with your team.
Reef
Library that extends vanilla worldgen by providing alternatives to unmodifiable features
Durability Damage Recipe
A mod adding 2 new crafting recipe types that damage damageable input items instead of consuming them during crafting. These recipe types are ready to use in your mod or data pack!
Simple Woodcutter
This mod adds a simple vanilla-like woodcutter. It's easy to craft and it has over 100 built-in recipes. You can also use it in your own mod, for example to add custom recipes to your custom wood etc.
trDiscordSync
Account Linking, 2FA, Discord Role Integration, Daily Rewards, Logger System!
List Please!
Mod for modpack creators that allows you to print lists of items and blocks
RevertRaidChanges-Pro
Restored Raid to the logic before version 1.21. Allows most professional Raid Farms to function.
Maths
Adds some mathematical functions to minecraft
BLib: Resurrection
Cloned with permission. Continuation of the Blib Library. Dependency of AVP mods.
GuardianAc++
Enterprise anti-cheat for 10k+ players. 12 detection modules, real-time monitoring, Discord integration, zero vulnerabilities. Professional-grade protection with dynamic scaling.
Markdown Manual: Renewed
Library mod for creating in-game manuals. Ported to later version(s).

Loot Inject
A simple mod that allows injecting a loot table into an existing table
Cucumber Fabric
A semi-finished fork of Cucumber Library using Porting Lib.
ShaderAPI-Paper
Minecraft Paper Plugin for the ShaderAPI. Let servers send you shader packs.
Mynt 4
Not a real mint!
Gelatin UI
A library that provides easy dynamic UI building tools.
Tick Rate API by Morak720
My Tick rate api mod to use with speedster in gods & heroes 2
Achievement & Quest Tab
Comprehensive progress tracking system that displays achievements (advancements) and quests in player tab list with full FTB integration.
Brick Lib API
Provide a common set of APIs to develop minecraft mods
Text Styles
An advanced, modular, and highly personalizable text effect system for Minecraft.
Backstube
Bake your own music discs
Data Utils
Datapack Utilities to aid in data pack creation!
CC:Gamepad
CC: Gamepads adds a CC:Tweaked peripheral block which lets ComputerCraft computers read real gamepad/controller input from players.
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.
VelocityNavigator
The all-in-one Velocity network solution for intelligent lobby routing, parties, queues, Java and Bedrock menus, server management, Redis sync, failover, and live monitoring.