Minecraft Java 1.21 Mods
Browse 761 free mods for Minecraft Java 1.21 — popular picks include Legendary Plugin, Sakura Phantoms, Custom Boss Zoryth AI.
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Legendary Plugin
A powerful, all-in-one server administration suite featuring a GUI-based Effect Manager, Custom Items (Super Pickaxe), Temporary Powers, and rich chat formatting. The ultimate tool for Legendary admins.

Sakura Phantoms
A lightweight, high-performance plugin that adds passive Phantoms to the End dimension.
Custom Boss Zoryth AI
Zoryth AI Boss is a premium, high-performance custom boss framework for Paper (1.21.x).
Pal's Palette
It is a project(mobpack) for bubble launcher
Despawn Mobs Simulation Distance
Allows mobs to despawn with simulation distances under 8
ModPackServidores
This modpack is focused on improving animations for various aspects of the game, including player skins, animals, villagers, and many other mobs. It is also optimized to enhance Minecraft's performance and overall gameplay experience.
Traders Shrine
A centralized Villager Trading Hub for your Trading Halls. Features Bulk Trading, Upgrades and more QoL.
PhantomGuard
Prevent Phantom spawns with player-specific permissions.

OGDuels
OGDuels is a lightweight, high-performance Duels, FFA, killstreak, bounty, and leaderboard module designed for competitive Minecraft PvP servers.
LuminolOptimizations
Supposed to be a performance and memory optimization plugin for my Minecraft server (LUMINOL)
Multi-LangTTS-MC
Adds real-time multilingual Text-to-Speech (TTS) to Minecraft chat using Google Translate and ElevenLabs, with async processing and zero performance impact.
nearest-villager
Nearest Villager Job: Automatically assigns workstations to the closest villager and lets you highlight owners with a sneak-right-click. Optimized for Paper/Spigot 1.21.1+.
Entityopt
Helps server owners to locate and resolve lag for Fabric servers with crippling entity counts.
CosDuels
Duels is a powerful and optimized 1v1 PvP duel system designed for competitive Minecraft servers.
Handy Mob Culler
Enhances server performance by automatically despawning mobs that pick up specific, configurable items, preventing unintended persistence and reducing lag.
No Nether RoofSpawns
A lightweight Fabric mod that intelligently controls mob spawning on the Nether roof
SYSTEM SMP
System SMP is a premium Minecraft plugin designed for survival multiplayer servers. It adds unique features including small caps text formatting, tree felling mechanics, custom item displays, and an economy-based spawner mining system.

LBSpawners
Advanced stacked spawners
PNode
Paper plugin with intuitive visual node-based editor for server logic. No coding required.
Improved Structures & Dungeons
The combination of all minecraft Structure & Dungeons Data Pack
Petrify an Oak Slab│石化一個橡木半磚
Added Petrified Oak Slab recipe.│添加了石化橡木半磚配方。
Empiremodpack
A stylish, cozy Minecraft modpack designed with creativity in mind—perfect for building, decorating, and exploring without the chaos of magic or overpowered mobs
onlypvpShaders
performance-first Java texture pack built for competitive play. It features essential PvP visibility tweaks (no fire, reduced clutter, custom audio) alongside built-in lightweight shader effects like waving grass, realistic lighting, crystal clear water
No Bullying
A lightweight plugin that prevents mob swarms by limiting how many mobs can target a player at once.
THE HORRORS BUT BETTER
THE HORRORS adds 4 new biomes more blocks more crafting tables like the de-radioactivator and the improved smelter and the fabricator and it adds more mobs and it is only to get updated more! updates: the start ,NUCLEAR WARNING!!!!!
Aqua´s Vanilla+
Just a Vanilla+ Modpack with Performance optimization and natural feel. Adds more Structures & Mobs to the overworld + nether & overhauls the End. A more lively world while keeping it as close to Vanilla as possible
CREEPER ANTI LAG
Advanced anti-lag plugin featuring TNT protection, intelligent item cleanup, mob optimization, lag machine detection, and real-time TPS monitoring.
DemonFPS
A lightweight PvP and FPS optimization modpack for smooth, fast, and competitive Minecraft gameplay.
Cobblebalance
Re-balances for Pokémon stats, moves and abilities
ZOL
My mods like update zol and better netherite it adds more dimensions and more mobs more blocks fun features for mobs and dimension and structures and you can craft stuff like chainmail armor now.
VillagerNoAI
Proximity-based villager AI disabler for optimization
Aizen_0
This modpack will boost your FPS like a rocket, and also, this modpack can also run on the mobile launcher.
CloudeEngine
The ultimate performance upgrade for mobile players. This engine optimizes hardware efficiency under the hood to deliver a fluid, stutter-free experience while maintaining a 100% vanilla look.
Terra utlima
Immersive survival modpack featuring new biomes, dangerous creatures, custom weapons, quests, realistic progression, thirst management, dynamic seasons, and advanced technology for a challenging, strategic, and captivating adventure experience.
Villera
Turn villages into living economy hubs with biome-adaptive banks and markets, secure currency, rentable chunk claims and performance-friendly stacked spawners
ArmadilloSleeper
Sends Armadillos at XP Farms into Sleep to make TPS better but still make XP Farms very good!