Based out of China, Easypano has several different programs. TourWeaver is the flagship product. It can create robust virtual tours including floor plans and compass. The interface is easy to use and understand (although the help files still have a lot of grammar / translation problems.) You can download trial versions from their website: http://www.easypano.com/free_trial.html
and see the TourWeaver features here: http://www.easypano.com/download/flash/tw_feature_tour.html
One of the unique features is the ability to create custom skins � and cool looking ones at that. This means that you can have a custom look for each tour you create.
But the price is hefty: $500 for the pro version, $200 for the standard version (has their logo and link.) The newest version also requires online activation. But you get what you pay for. The tours are professional looking and full featured. Many consider the product overpriced, though.