Minecraft Java 1.21 Mods
Browse 535 free mods for Minecraft Java 1.21 — popular picks include ChatManager-Core, AuctionX, Ultimate Step.
Updated daily
ChatManager-Core
ChatManager-Core is a library for working with Minecraft chat
AuctionX
A modern, fully customizable auction house plugin with per-rank limits, MySQL/SQLite storage, PlaceholderAPI & Discord integration, and a fully editable English messages.yml.
Ultimate Step
UltimateStep is an all-in-one Paper server management plugin featuring a powerful rank system, configurable scoreboard, customizable tablist, and complete punishment tools including warn, mute, ban, kick, unmute, and unban. Lightweight, modern, and easy
Kit Manager
A Datapack that lets you save your inventory into a kit to then load it later down the line!
Claude Code: Rate Limited
A Fabric mod for Minecraft 1.21.1 that adds Claude Code enchantments, token limits, rate limiting, item recovery, loot-based enchanted books, achievements, and the Claude Terminal.
CommandNeural
AI-powered Minecraft server admin via MCP — 100+ tools for construction, WorldGuard, LuckPerms, Vault, PAPI & Oraxen. Let any AI control your server.
REST HTTP API
A Minecraft Paper plugin that allows executing server commands and get various information via HTTP requests. Perfect for integrating external tools, web dashboards, or automation scripts with your Minecraft server.
locked keys Plugin
Server-side plugin that controls player inputs and camera using the BlockKeys mod.
PlayCustomSounds
This project allowed owners to add new disc to their server
Report list
A lightweight and efficient reporting system for your server. It allows players to report rule-breakers and features a clean, interactive chest GUI for staff to easily review and manage those reports.
P_TopJogadores
Top Players via placeholders, NPC support, and holograms.
PlugLoader
It is a plugin framework that enables the creation of dynamic and modular systems on Minecraft servers. It simplifies the process of adding new features to the server and allows for the quick management, activation, and deactivation of systems. (BETA)
HardObtainment
This project adds hard more balanced crafting recipes to Minecraft. So far here is the crafting recipes we have changed: Mace
HttpChat Python chat, Linux chat
A mod that adds the ability to send messages or commands to the chat on behalf of the player directly from any programming language or console.
Config Hub
USH-Universal Config Hub is a web dashboard for editing all Paper plugin configs. It validates changes, shows reload requirements (hot, plugin reload, or server restart), and safely migrates old versions with backups.
ProgressionBoarder
Powerful zone/border control—restrict, protect, and guide players with clear rules and feedback.
Player Utils
This Is A NeoForge mod for Minecraft 1.21.1 that adds utility commands for server administration.
BoostSync
Reward your Discord Nitro boosters in Minecraft with automated, verified rewards. BoostSync links accounts with a one-time code, grants a renewing 7-day booster rank while they keep boosting, and offers once-per-season reward claims.
NxControl
NxControl is an advanced staff plugin that lets OP players control players or mobs using simple keybinds, with GUI, bossbars, and freeze system built-in. It’s lightweight, powerful, and perfect for moderation, trolling, or cinematic gameplay.
NextLib
Build Minecraft Plugins The Easy Way
NxRestrict
NxRestrict is a powerful GUI-based Minecraft plugin that lets you easily enable or disable gameplay features globally or per player. It provides real-time control with no restarts, using a clean interface and instant enforcement.
PerInfo
PerInfo is a robust utility plugin developed for Minecraft 1.21.1. It was designed to provide total transparency regarding commands and permissions, while transforming the chat experience through dynamic, real-time sharing of items and player status.
TOU
Now you can craft Totem of Undying.
NxFreeze
NxFreeze is a lightweight staff plugin that allows admins to freeze/unfreeze players using commands or an easy GUI.
DialogAuth
Lightweight minecraft auth plugin with DialogAPI support
ClickPoint
A data-driven GUI mod that supports native gif rendering and designed to be intuitive and approachable.
Loom
Install and configure every plugin from one web panel.
Econics
Econics adds a flexible multi-currency system to your Minecraft server. Create custom currencies with MySQL/SQLite support and a simple developer API.
Kaze's Kit Setup
A datapack that adds the ability to create and load kits withoout using mods.
QinhCoreLib
Shared core library for the Qinh plugin suite. Unifies item sources (CraftEngine, ItemsAdder, Nexo, MMOItems, MythicMobs & more), attributes, custom-block & model bridges, and scripting. Required by QinhItems, QinhSkills, and other Qinh plugins.
Slipstream
Ultra-fast, zero-allocation packet framework for Paper 1.21+. Coroutine-first, ProtocolLib-style API for modern Kotlin developers.
KrepAPI (Plugin)
Run server commands when a player presses a key- configured in a simple YAML file, no programming required.
ErebusHeads
get all and any ones head/skull! simply type /eh <players name>
ZeresClient
Mod ZeresClient for Server Minecraft
KNLibs
KNLibs is a lightweight, high-performance core library required for all KN Projects plugins.
InfinityCore
Library used in InfinityGroup Plugins for compatibility and optimization development.