You can create shortcuts to launch specific Steam accounts. Stay safe, and always use official, trusted tools. To help you find a safe solution, are you looking to: Automatically log in to one account? Switch between multiple accounts quickly? Automate the 2FA (Steam Guard) process?
Do not download or run unfamiliar .rar or .exe files claiming to automate login processes. How to Safely Enable Auto-Login in Steam Autologin Steam.rar
Steam will now securely store your credentials in an encrypted format. You will not need to enter your password the next time you open the app. What to Do If You Already Downloaded It You can create shortcuts to launch specific Steam accounts
If you have multiple accounts and need to switch between them easily, use authorized methods: For managing multiple accounts securely. Switch between multiple accounts quickly