SharePoint Designer 2010 sign in as a different user

In SharePoint Designer 2010 you can open web site with a different user.

1. Login to your site using SharePoint Designer 2010.
2. Go bottom-left in main application window (left side of “status bar”) and click on the user icon.
3. A popup tells you who is the current user, if you click OK, obtain the usual popup to login as a different user.