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Minecraft Java 1.21 Mods

Browse 16 free mods for Minecraft Java 1.21 — popular picks include Minecolonies Modernization update, Slimefun United, NoLag-Ultimate.

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Minecolonies Modernization update
1.21.1neoforge

Minecolonies Modernization update

Modification to Courier Transport Capacity in the minecolonies

4.1kdownloads
Slimefun United
1.19

Slimefun United

A modern and organised continuation of Slimefun’s legacy. Slimefun United transforms your server into a modpack-like experience with backpacks, jetpacks, reactors, electricity, automation and countless new systems.

2.7kdownloads
NoLag-Ultimate
1.21.4

NoLag-Ultimate

NoLag Ultimate is a comprehensive and high performance optimization solution specifically engineered for modern Minecraft servers running on version 1.21 and above. This all in one utility focuses on maintaining peak server stability by addressing the most

1.5kdownloads
JPremium
1.8

JPremium

JPremium is a modern authentication plugin for Minecraft proxy servers (BungeeCord or Velocity).

233downloads
userencrypt
1.20

userencrypt

New modern plugin to protect offline-server networks from username-theft without any password/authentication.

182downloads
GlobalChatTo
1.0

GlobalChatTo

A modern globalchat plugin for Velocity servers

176downloads
Aduxx Lobby
1.21

Aduxx Lobby

🛡️ Aduxx Lobby – Velocity Plugin Aduxx Lobby is a lightweight and fast 🌪️ Velocity plugin that lets players quickly return to the lobby server with a simple /lobby command. Designed for modern Velocity networks, it's easy to configure and user-friendly!

136downloads
Corex
1.21

Corex

Modern, Paper-exclusive compiled scripting engine

131downloads
Modern Industrialization - CC: Tweaked - Compat
1.21.1neoforge

Modern Industrialization - CC: Tweaked - Compat

This mod implements the CC: Tweaked peripheral functions "GetEnergy" and "GetEnergyCapacity" for Modern Industrialization's LV-SV Storage Units.

77downloads
QL-Hub
1.8

QL-Hub

A modern, lightweight, and smart /hub command for BungeeCord and Velocity with background ping-checking and load-balancing.

59downloads
BubbleLog
1.17

BubbleLog

Modern, Hosting-Friendly System Monitoring for Velocity

50downloads
TransferX
1.21

TransferX

Direct player transfer plugin for Paper (1.21.x) without Velocity or BungeeCord. Uses Minecraft’s modern transfer packet system to move players between servers via commands and automated routes.

19downloads
FluxySpawn
1.20

FluxySpawn

A lightweight spawn plugin designed for performance and simplicity. Easy to set up, optimized for modern servers, and packed with essential spawn features.

17downloads
Modern Industrialization Mod (1.21.1, 1.20.1) – Techical Blocks
1.21.1neoforge

Modern Industrialization Mod (1.21.1, 1.20.1) – Techical Blocks

Modern Industrialization Mod is the ultimate technical Mod, which allows players to do many amazing things if they're competent. With the manual in hands, players can accomplish almost anything with a little help of Modern Industrialization, players can accommodate electricity for their villages, create material out of thin air and craft some of the most […]

M
1.21.1neoforge

Megalopolis

Build the Modern World – One Immersive Survival City at a Time.

202downloads
C
1.11

Cat Queue

Modern Queueing for Velocity

151downloads