AnonMC

AnonMC is a client-side Fabric mod designed to make multiplayer sessions more anonymous by replacing visible player names with temporary aliases such as Anonimo, Anonimo1, Anonimo2, and so on.

Instead of showing the real username of each player, AnonMC assigns anonymous aliases during the current session. This makes it harder to immediately identify who is who through the normal Minecraft interface.

Features

• Replaces visible player names with anonymous aliases.

• Anonymizes player name tags above characters.

• Anonymizes names shown in the TAB player list.

• Replaces known player usernames when they appear in chat and system messages.

• Keeps aliases stable during the current server session.

• Automatically resets aliases when disconnecting or reconnecting.

• Works entirely on the client side.

• Does not modify player UUIDs, GameProfiles, accounts, or server-side identity.

How aliases work

Players receive aliases in the order they are detected.

Example:

• First detected player: Anonimo

• Second detected player: Anonimo1

• Third detected player: Anonimo2

• Fourth detected player: Anonimo3

Aliases remain consistent until the player disconnects from the server.

Client-side mod

AnonMC currently works as a client-side privacy layer.

Only players who install AnonMC will see the anonymized interface.

A player using an unmodified Minecraft client may still see the original usernames provided by the server.

AnonMC does not currently attempt to alter Minecraft's underlying network protocol or account identity.

Privacy limitations

Version 1.0.0 focuses on visible usernames.

Other information may still reveal a player's identity, including:

• Player skins

• Voice chat

• Gameplay behavior

• UUID or profile information accessible through other mods

• Server logs

• Administrative tools

• Third-party user interfaces

Future versions are planned to provide stronger anonymization.

Planned features

Future releases may include:

• Anonymous or replacement player skins

• Configurable alias prefixes

• Optional persistent aliases

• Server-wide synchronized aliases

• Server companion mod

• Detection or restriction of clients without AnonMC

• Scoreboard anonymization

• Command suggestion anonymization

• Additional GUI censorship

• Improved structured chat sanitization

• Configuration menu

Requirements

• Minecraft Java Edition 26.2

• Fabric Loader 0.19.5 or newer compatible version

• Fabric API

• Java 25

Installation

1. Install Fabric Loader for Minecraft 26.2.

2. Install Fabric API.

3. Place the AnonMC .jar file inside your Minecraft mods folder.

4. Launch Minecraft using the Fabric profile.

Source code

AnonMC is open source and distributed under the MIT License.

Source code is available on GitHub:

Tylerpro09/AnonMC

Disclaimer

AnonMC is intended to reduce the amount of personally identifiable player information shown through the normal Minecraft interface.

It is not a cryptographic anonymity system and does not guarantee complete anonymity against modified clients, server administrators, network inspection, or third-party mods.