What is roblox-account-manager?

This is a Windows desktop application for managing multiple Roblox accounts from a single place. Roblox normally requires you to log out before switching to a different account, but this tool lets you store several accounts and jump between them without that friction. The core use case is "multi-instance" play, where you want more than one copy of Roblox running at the same time on the same computer. That might be for running a farming account alongside your main account, managing storage or trading accounts, or testing private servers. Each account is added by pasting in a browser cookie (the .ROBLOSECURITY token) or by logging in directly, and the app then handles launching Roblox in separate windows. The application is built for Windows 10 and Windows 11. It is open-source and written in C#, which means you can read the code yourself if you want to understand what it does before running it. The README notes that antivirus programs sometimes flag it as suspicious, which the authors describe as a false positive common to tools that automate browser sessions. The project includes a brief troubleshooting table covering the most common setup problems: running as Administrator if accounts do not save, enabling the multi-instance setting if only one window opens, and updating GPU drivers if the game crashes. There is no server component and nothing is sent anywhere externally. The README does carry a clear caution: running multiple Roblox accounts at once may violate Roblox's terms of service, and the tool is offered for personal and educational use only.