No se si alguien lo usa pero es free y tiene buenos comentarios.
Microsoft Image Composite Editor is an advanced panoramic image stitcher. Given a set of overlapping photographs of a scene shot from a single camera location, the application creates a high-resolution panorama that seamlessly combines the original images. The stitched panorama can be shared with friends and viewed in 3D by uploading it to the Photosynth web site. Or the panorama can be saved in a wide variety of image formats, from common formats like JPEG and TIFF to the multiresolution tiled format used by Silverlight's Deep Zoom and by the HD View and HD View SL panorama viewers.
Descarga
http://research.microsoft.com/en-us/um/redmond/groups/ivm/ICE/Algunos ejemplos de fotos para descargar y ensamblar la Pano...
http://www.photofit4panorama.com/gallery.html
