What browsers are supported by the Giamso Tours site? The Giamso Tours website supports the following OS and browsers: iOS 5.0- Android OS 4.0- Windows 7- IE9-, The latest version Google Chrome/Firefox Mac OS X 10.6- The latest version Google Chrome/Firefox/Safari Was this article helpful? Can't find what you're looking for? Inquiry Form Related articles What payment encryption protocol is used for credit card payment? I can no longer use the e-mail address I registered and I forgot my itinerary number.