SwitchZ
by ALostMagic
SwitchZ lets a player change the offline username used in-game without leaving the session or restarting the client.
What it does
The mod provides a lightweight in-game switcher for offline usernames. A player can pick a different name from inside the game, so testing accounts or alternate characters need no separate launcher step. It is a client-side only mod, so only the client needs it and servers run without it. Files are published for NeoForge, for 1.21.1 and 1.21.11, with 1.0.1 for 1.21.11 as the latest file. The code is available publicly, but the mod is released under All rights reserved and is not open source.
Key features
Offline username switching
Switches the offline username in-game, without editing launcher profiles or restarting the client.
Lightweight design
Built as a small addition, so it adds little to the load on a running client.
Public source code
Source code is publicly available, and bugs are reported through the mod's GitHub page.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Questions
Does SwitchZ need to be installed on the server?
Which versions of Minecraft does SwitchZ support?
In the catalog
SwitchZ is one of 8,016 Management mods on ModsFinder, and one of 2,689 Management mods for NeoForge. 19,862 mods support Minecraft 1.21.11.
More from ALostMagic
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What the author says
This mod allows you to switch your offline account username without closing the game. Simply click the SwitchZ button on the top right of the title screen and type in your new username. If you encounter any bugs, please report them on the mod's GitHub page.
Official listing
- Modrinth page
- modrinth.com/mod/switchz
- Owner
- ALostMagic
- Published
- 2026-02-12
- Updated on Modrinth
- 2026-04-08
- Facts verified
- 2026-10-15