AltManager

AltManager

Quick account switching without leaving the game

by
2.0K Downloads
fabrictechnologyutility
Rent Server with this Mod

Screenshots

AltManager in the ESC menu
AltManager in the ESC menu (2)
Main menu
Accounts window

About this Mod

This mod allows you to change your nickname locally without leaving Minecraft. You can generate random account nicknames with one click, as well as add your own custom ones.

Этот мод позволяет менять никнейм локально, не выходя из Minecraft. Вы можете генерировать случайные никнеймы аккаунтов в один клик, а также добавлять собственные.

Available Versions

AltManager 2.2.2release
MC 1.21.1fabric
June 10, 2026
AltManager 2.2.2release
MC 1.21.2fabric
June 10, 2026
AltManager 2.2.2release
MC 1.21.3fabric
June 10, 2026
AltManager 2.2.2release
MC 1.21.4fabric
June 10, 2026
AltManager 2.2.2release
MC 1.21.5fabric
June 10, 2026

How to Install AltManager on Your Server

1

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

2

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.11).

3

Install Mod

Open the mod browser in the dashboard and search for "AltManager". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.11, 1.21.10, 1.21.9 (+8 more)

Server-side

Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

AltManager server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.11). You can switch loaders with one click in the panel.

Is AltManager compatible with fabric?

AltManager officially supports fabric for Minecraft 1.21.11, 1.21.10, 1.21.9. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with AltManager – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if AltManager consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.

Rent Modded Server

Install AltManager with just one click on your server.

Recommended RAM
4 GBab €8/mo
Min. 3 GB | +1 GB pro 8 Spieler
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
MIT License
Server-side
Unsupported

Supported Versions

1.21.111.21.101.21.91.21.81.21.71.21.61.21.51.21.41.21.31.21.2+1 more