Minecraft Java 1.21 Mods
Browse 373 free mods for Minecraft Java 1.21 — popular picks include PrismaticAPI, RemooLogin, TesseraUI.
Updated daily
PrismaticAPI
Versatile library for advanced color manipulation and text formatting in Bukkit/Spigot/Paper plugins.
RemooLogin
A lightweight Minecraft plugin for offline servers that requires players to register and log in before interacting.
TesseraUI
TesseraUI is a lightweight HTML/CSS UI framework for NeoForge that lets mod developers build Minecraft screens with runtime-parsed HTML templates, CSS styling, flexbox/grid layouts, data binding, animations, i18n, drag and drop, item slots, virtual lists,
AudioEnginePlus
Advanced audio optimization engine for Minecraft: smart pooling, deduplication, caching, and LOD for peak performance.
ItemPro
ItemPro - Because knowledge is power, even in Minecraft! ⚔️📚✨
P_Terrenos
Terrenos Customizados Custom lands
P_Lixeiro
o P_lixeiro limpa seus mundos para evitar lag ou muito uso da cpu e memoria! P_lixeiro cleans your worlds to avoid lag or high CPU and memory usage!
PlayerActivityLogger
Tracks every move of every player.
SMPShield
Opens an API for real-time server CPU, memory, TPS usage, and player information, enabling efficient monitoring and management of your Minecraft server.
CorruptionCraft
A plugin that challenges players. Random events can occur. (no Spoilers!)
mcsl
MCSL is a dedicated server admin tool that lets you share your console logs, crash logs, timings, latest log and more. The platform allows sharing and management logs much easier.
SkriptPDC
Advanced Persistent Data Container API for Skript
Slothy's Tree
Client-side pack browser, Texture Builder, and OptiFine CIT support. Discloses network use: GitHub Pages catalog/downloads and optional Cloudflare Worker (heartbeats, stars, uploads). See full description for details.
MultiProxySync
Solve inconsistent player counts across multiple Velocity proxies.
Fast Spawn
Plugin that adds Light weight /spawn command with advanced Configuration, join massage (can't turn off) , Direction (yaw,pitch)
Everything
An all‑in‑one Minecraft server plugin 🛠 — bundling EVERYTHING into a single optimized jar.
DisplayExternalIP
Show your external ip in the window title and top left corner in game.
Another Cobblemon Moves API
ACMA is a mod that merge move learning instead of overwritting the whole species.
SaveAndExit
SaveAndExit is a plugin for safely restarting a server with backups and maintenance mode.
Command Framework
Dynamic command framework for Bukkit, Spigot, and Paper plugins.
LobbyPearl
Fly with enderpearl in the lobby!
Server Folders
A tiny client side mod, that allows you to organize your server list. :)
PermissionExporter
Ever wanted to export all your permissions into 1 easy to read txt document? well now you can :)
BackpackPro
High-Performance Storage Solution
Rg_Home
Rg_Homes is a simple Minecraft home plugin that lets players set up to 54 homes. Perfect for server owners who want customizable home slots with permissions support.
PluginPilot
Download plugins directly from Modrinth,Hangar,SpigotMC while being ingame! Load,unload, debug all in one plugin itself :)
CyberWorldReset
Easily reset a world with a scheduler or a specific time/date and more!
DisableEnd de-oωo-ified
A simple way to disable the end with a gamerule, now ported to 1.21.5 and without oωo dependency
NetworkSecurity
Security for your Network.
NitroSkulls
Count the days, collect the skulls!⚡
FernAPI
A JSON Based Permission API (WIP)
Entity Block
Adds the Entity Block to make creating custom structures easier
RemooHub
A lightweight Spigot hub plugin that allows players to teleport to a set hub location using simple commands.
Custom Boss Zoryth AI
Zoryth AI Boss is a premium, high-performance custom boss framework for Paper (1.21.x).
Player Input
Handles polling based input detection, made possible by the type-specific input field on players, provides easy & useful DX for tracking and acting on changes in this data.
ExooQueue
ExooQueue is a flexible and powerful queue plugin designed specifically for Paper Minecraft servers. It helps you manage player access to crowded worlds by implementing a fair, configurable waiting system — perfect for popular game modes or limited-capacit