Panotour Viewer lets you open .PTV files in an internet browser, offline. .PTV files are generated from Panotour virtual tour software (Panotour or Panotour Pro) and contain, in a single file, a whole virtual tour. With Panotour Viewer, it’s easy to display your tours on any computer, tablet or mobile phone with no need for an internet connection. You can also easily share your virtual tours with your clients or friends.