Panorama Express  supports all one-shot lenses, and full spherical panos. It uses it's own viewer, and can create linked panos for a vurtual tour. Virsion 1 is a little buggy, and the tooltips / hints for the hotspots display in the incorrect location. Overall it's a nice product, the tours are easy to create, and it's a simple interface. A little pricey though. Imatronics publishes Panorama express.