Minecraft Java 1.21 Mods
Browse 480 free mods for Minecraft Java 1.21 — popular picks include Arcane Classes, Mystic Pulse, More Functional Storage Upgrades for ExNihilo.
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Arcane Classes
Four classes, never-before-seen abilities, a mana system that punishes spammers, a trust system for allies, and a class trading system - Perfect for team based SMPs, or events.
Mystic Pulse
This datapack adds drums to the game and when you play them in a specific pattern it can give you effects
More Functional Storage Upgrades for ExNihilo
Addon for More Functional Storage Upgrades to support ExNihilo blocks
MagicFactory
Mod adding a new liminal space
OpenRouter Chatbot
OpenRouter Chatbot is a powerful and highly configurable Spigot plugin that integrates the OpenRouter AI API into your Minecraft server.
Stannum
Creates a client-side ambient effect using customizable particles, radius, and count
QuantumCraft
Each player sees their own version of the world
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.
PlayTimeLimit
A Minecraft Plugin wich Limits PlayTime
Aegis system
a simple and very customazable rpg plugin that includes mana, abilities, classes and more!
P_Comandos
A plugin for commands in items!

Player Tracker Pro
PlayerTrackerPro is an all-in-one player monitoring and administration utility.
VClickBlockCommand
V-ClickBlockCommand - Transform any block into a powerful command executor!
Forged in Blood
A third life mod with a dark twist.
Dirty Detect
A plugin that allows you to detect hack clients using the Sign Translation 'Vulnerability'. Most of the newer clients patched this, but it works flawlessly for older clients.
TSLzone
A zone damage plugin compatible with Folia.
Sculktech
Adding Sculk Machinery And Lethal Blocks!
RupeeEconomyCompanies
RupeeEconomyCompanies is a powerful economy and business management plugin for Minecraft servers running Paper or Spigot (1.21+). It introduces a complete ₹ Rupee-based financial system where players can create companies, manage employees, run businesses.
ManaFont
ManaFont is simple mana system inspired by Hypixel Skyblock.
Limbus-E.G.O
Limbus E.G.O Fabric is a mod for Limbus Company that adds new and reworked E.G.O equipment, offering fresh combat styles and more build variety. It’s designed to give players a simple but meaningful expansion to their gameplay experience.
Direct Name Lookup
Pull up a direct link to a username history of an account!
World of runes
a epic minecraft mod that add a lot of magical runes
Damage = new dimension
Makes it so that every time you take damage your dimension randomly changes (End, Overworld, Nether)
Anti crystal/anchor damage
This mod makes it so that end crystals and respawn anchor explosions don't deal any damage whilst preserving the knockback and destruction.
P_Vincular
Vinculação de discord com minecraft, cargos! Linking Discord with Minecraft, roles!
MRTSimpleBleed
Lightweight plugin that adds a configurable bleeding system: when a player takes damage, they have the option to start bleeding and take damage over time, with particles and sounds
SafeSteps
SafeSteps is a survival utility plugin that lets players toggle fall damage immunity and shows exact death coordinates with world info.
Voice Commandblock
Craft a voice-powered Command Block and make wishes using your voice!
Barrel Harvest
adding automatic tree harvesting, simple, effective, always active, fully configurable
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.
JsChatManageMent
ChatGuardX is an advanced Minecraft Paper 1.21+ plugin that provides complete chat moderation backup and security system for servers. It includes anti spam caps detection blacklist filters and link blocking to keep chat clean. The plugin supports mute unmu
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.
MaxTools
Perfect for a survival game with progression.
NxFreeze
NxFreeze is a lightweight staff plugin that allows admins to freeze/unfreeze players using commands or an easy GUI.
StarPortal
This plugin is created referencing the Stargate saga, although the plugin itself is a way for players to transport themselves through portals.
Void and Full
A necessary mod to bring the creatures, magic and weapons of the Void Gifted Server to players.