Minecraft Java 1.21 Mods
Browse 2,182 free mods for Minecraft Java 1.21 — popular picks include SentinelStaff, HeatSMP, ProCRAFT.
Updated daily
SentinelStaff
SentinelStaff is a lightweight, powerful admin utility plugin designed for modern Paper servers (1.21–1.21.x).Built for performance. Designed for control.
HeatSMP
A high-performance, hardcore survival plugin for PaperMC. Harness heat to unlock "unimaginable power," survive the extreme conditions of $100.0^\circ$ Meltdowns, and siphon energy from your rivals.
ProCRAFT
The better Minecraft for everyone!
VCAnalyser
An intelligent system that analyzes the causes of MSPT and TPS drawdowns, as well as RAM and CPU consumption.
KNLibs
KNLibs is a lightweight, high-performance core library required for all KN Projects plugins.
MekDefender
A NeoForge server protection mod for Minecraft 1.21.1 + Mekanism. One mekdefender project and one JAR provide:owner-aware chunk loading for Anchor Upgrade machines and the Dimensional Stabilizer;bounded latest-state synchronization for four proven-safe
InfinityCore
Library used in InfinityGroup Plugins for compatibility and optimization development.
TERRADRILL
Forget ordinary pickaxes! TerraDrill introduces high-performance tools that use energy cores to excavate with speed and thermal efficiency.
VMLogin
This is a simple Minecraft auth plugin.
PixSystem
PixSystem It is an add-on that manages the server from deleting abandoned stuff and protecting the server from spawn and other additional things
CoreLifesteal
A highly optimized, customizable Lifesteal core featuring player heart withdrawal, admin menus, and immersive multiblock revival altars.
Create: Automata
Official modpack for the Create: Automata server. Jam packed with Create addons, QoL mods! All while keeping it mostly lag free!
SyEnergy
Reduce the view distance and render distance for AFK players on your Minecraft server to reduce resource waste
MaxEntitiesInChunk
Manage or Restrict the number of entities in each chunk. specially adapt to Mohist Server.| 限制每个区块的实体上限，并适配Mohist。
lagwatch
Always-on lag detector that automatically catches TPS drops, lag machines and chunk hotspots before you even notice them.
Aeronautics Origins
A Minimal Create Aeronautics Pack Paired With Origins
SkripyTpa
A high-performance teleportation suite designed with aesthetic configs.
ThreadSight
Real-Time Performance Intelligence ThreadSight is a lightweight, high performance server performance monitoring plugin for Minecraft
McLinuxBridge
Execute and stream live Linux/macos or Windows terminal of your free public server hoster server commands asynchronously directly from your Minecraft chat or console panel.
GuardChunk
Protect your server from lag and chunk overload by automatically limiting blocks and entities. GuardChunk keeps your performance stable, optimized, and secure.
TB-ScoreTime 1.21.x - 26.x
A high-performance, fully asynchronous leaderboard and automated reward system
MJCoordinates
MJCoordinates is a clean, performance-friendly Minecraft datapack that displays your real-time X, Y, Z coordinates, the current world day count, and your cardinal facing direction directly on the action bar.
Discord Viper
ViperBridge is a high-performance, Server-Side ONLY bidirectional gateway bridging Minecraft, Discord, and REST APIs for Minecraft. Seamless chat relay, moderation commands from Discord, player info querie, and full server control—no client mods required.
20TPS
20TPS is an all-in-one performance toolkit that stabilizes your server by limiting lag machines, stacking mobs, and fixing common exploits.
RedOut
Allows players to get server metrics like mspt as a redstone signal from an item frame.
ME Spawner
An AE2 addon that adds an ME-powered mob spawner.
FluxySpawn
A lightweight spawn plugin designed for performance and simplicity. Easy to set up, optimized for modern servers, and packed with essential spawn features.
Rptback
Rptback is a Folia-optimized /back plugin for Paper 1.21+ servers. It safely teleports players to their death point with very smart safety checks, fully configurable delay, and clickable chat buttons.
Synix
Secure Discord ↔ Minecraft sync bridge for Spigot/Paper with embedded high-performance bot, bi-directional chat, and automation features.
wauth
wAUTH is an ultra lightweight and high performance server security solution designed for Minecraft networks running Paper Purpur Spigot or CraftBukkit across versions 1.20.6 through 1.21.4 and above. The plugin eliminates the need for bulky external world
CBC Ballistics Fix Sable
Prevents extreme lag and game freezes when using the CBC Ballistics Rangefinder and Radio on physical ships from Create Aeronautics / Sable.
DynamicWarden
An automated, high-performance Void Warden Boss Event with dynamic JSON bossbars and premium rewards
Squaremap Folia Regions
A high-performance Squaremap extension specifically designed for Folia servers to visualize threaded regions in real-time.
AstraControl
AstraControl is a free, all-in-one server control center: live health monitoring, plugin/hook status, error watching, maintenance mode, broadcasts, PlaceholderAPI testing, and permission debugging in one config-driven GUI.
sable rest
simple modpack for calm gameplay
VertexaCore: One plugin, two essential features, infinite performance
Ultra-lightweight core: Flicker-free stats and automated alerts with zero TPS impact