Mods for Minecraft Java
Browse 49 free mods for Minecraft Java — popular picks include Version Blocker, JsPig, BuildAid.
Step by step: How to install Minecraft Java mods & modpacks
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Version Blocker
A Velocity plugin to allow only a single game version. Display a custom message if the version is incorrect.
JsPig
JsPig provides complete access to the Bukkit API via GraalVM, allowing developers to efficiently create and manage Minecraft plugins using JavaScript's flexibility and simplicity.
BuildAid
Pin reference images over your screen with adjustable opacity, Client-side.
ArmorFade
Customize your own armor visibility with per-slot opacity, hiding, glint control, and multiplayer sync.
GolbNametags
GolbNametags is a lightweight client-side mod that restores rendering of your own nametag in third-person view and improves overall nametag visibility by removing background opacity
Mkn Lobby Command
A mod that fixes the respawn location of the lobby server and allows you to connect to a specified server in Velocity by right-clicking on a specific block
NamVelocityBlockVersion
A lightweight Velocity proxy plugin to block specific Minecraft versions per backend server. Supports custom commands and ajQueue integration.
Block Destroy Entity Drop
Makes broken block item drops spawn at the block center and fall straight down instead of flying away with random velocity.
SpawnerCleaner
SpawnerCleaner is a high-performance utility plugin designed to prevent abuse of spawner mechanics and keep the server economy balanced, particularly on SMP and Towny servers.
Queue Plugin
An Queue Plugin for Velocity, easy to set up!

SomeNotify
SomeNotify is a Velocity plugin for sending message to all players connected through the proxy.
PixelMOTD
Customize your minecraft server motd, change your max and online players, hover, protocol, including Gradient Support
Vortexia Core
A high-performance, modular identity and data framework for Minecraft servers, decoupling player profiles from UUIDs via a unique Citizen Card system.