A Montréal virtual tour is a set of static or panoramic images, linked together, which give the user the possibility of moving around within the image at will. We can consider the virtual tour as a photo...
It really comes down to what you want to do with the panorama in terms of presentation. From your post, it's obvious that you want HTML support for mobile devices. There are a number of free Panorama 360˚ hosting sites...
Are you an agent or a future real estate buyer? Do you want to be able to visit the house or apartment without having to move? You're a busy seller and you don't have time to present your house or...