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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
1.2.1

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.

139downloads
Sakura Phantoms
1.21

Sakura Phantoms

A lightweight, high-performance plugin that adds passive Phantoms to the End dimension.

139downloads
Custom  Boss Zoryth AI
1.21.11

Custom Boss Zoryth AI

Zoryth AI Boss is a premium, high-performance custom boss framework for Paper (1.21.x).

137downloads
Pal's Palette
1.21.1neoforge

Pal's Palette

It is a project(mobpack) for bubble launcher

135downloads
Despawn Mobs Simulation Distance
1.21fabric

Despawn Mobs Simulation Distance

Allows mobs to despawn with simulation distances under 8

134downloads
ModPackServidores
1.21.7fabric

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.

133downloads
Traders Shrine
1.21.11

Traders Shrine

A centralized Villager Trading Hub for your Trading Halls. Features Bulk Trading, Upgrades and more QoL.

132downloads
PhantomGuard
1.17

PhantomGuard

Prevent Phantom spawns with player-specific permissions.

132downloads
OGDuels
1.21

OGDuels

OGDuels is a lightweight, high-performance Duels, FFA, killstreak, bounty, and leaderboard module designed for competitive Minecraft PvP servers.

130downloads
LuminolOptimizations
1.21

LuminolOptimizations

Supposed to be a performance and memory optimization plugin for my Minecraft server (LUMINOL)

129downloads
Multi-LangTTS-MC
1.21.10fabric

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.

127downloads
nearest-villager
1.21

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+.

127downloads
Entityopt
1.21.1fabric

Entityopt

Helps server owners to locate and resolve lag for Fabric servers with crippling entity counts.

126downloads
CosDuels
1.19spigot

CosDuels

Duels is a powerful and optimized 1v1 PvP duel system designed for competitive Minecraft servers.

126downloads
Handy Mob Culler
1.21.4

Handy Mob Culler

Enhances server performance by automatically despawning mobs that pick up specific, configurable items, preventing unintended persistence and reducing lag.

126downloads
No Nether RoofSpawns
1.21.7fabric

No Nether RoofSpawns

A lightweight Fabric mod that intelligently controls mob spawning on the Nether roof

125downloads
SYSTEM SMP
1.16

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.

123downloads
LBSpawners
1.16

LBSpawners

Advanced stacked spawners

122downloads
PNode
1.21

PNode

Paper plugin with intuitive visual node-based editor for server logic. No coding required.

121downloads
Improved Structures & Dungeons
1.21.10

Improved Structures & Dungeons

The combination of all minecraft Structure & Dungeons Data Pack

121downloads
Petrify an Oak Slab│石化一個橡木半磚
1.21.4

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。

121downloads
Empiremodpack
1.21.8fabric

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

120downloads
onlypvpShaders
1.21

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

119downloads
No Bullying
1.21.4

No Bullying

A lightweight plugin that prevents mob swarms by limiting how many mobs can target a player at once.

118downloads
THE HORRORS BUT BETTER
1.21.8neoforge

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!!!!!

117downloads
Aqua´s Vanilla+
1.21.1fabric

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

116downloads
CREEPER ANTI LAG
1.21

CREEPER ANTI LAG

Advanced anti-lag plugin featuring TNT protection, intelligent item cleanup, mob optimization, lag machine detection, and real-time TPS monitoring.

114downloads
DemonFPS
1.21.11fabric

DemonFPS

A lightweight PvP and FPS optimization modpack for smooth, fast, and competitive Minecraft gameplay.

113downloads
Cobblebalance
1.21

Cobblebalance

Re-balances for Pokémon stats, moves and abilities

112downloads
ZOL
1.21.8neoforge

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.

111downloads
VillagerNoAI
1.21.4

VillagerNoAI

Proximity-based villager AI disabler for optimization

110downloads
Aizen_0
1.21.1fabric

Aizen_0

This modpack will boost your FPS like a rocket, and also, this modpack can also run on the mobile launcher.

109downloads
CloudeEngine
1.21.4fabric

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.

107downloads
Terra utlima
1.21.9fabric

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.

105downloads
Villera
1.21.11fabric

Villera

Turn villages into living economy hubs with biome-adaptive banks and markets, secure currency, rentable chunk claims and performance-friendly stacked spawners

104downloads
ArmadilloSleeper
1.21

ArmadilloSleeper

Sends Armadillos at XP Farms into Sleep to make TPS better but still make XP Farms very good!

104downloads