PTGui Standart/Pro 11.21 Description by the Software Developer:
"PTGui is panoramic stitching software for Windows. Originally developed as a Graphical User Interface for Panorama Tools (hence the name), PTGui now is a full featured photo stitching application.
Use PTGui to stitch any number of photos into a panoramic image. Some benefits of PTGui, when compared to other stitching software:
PTGui can stitch multiple rows of images
Create 360 degree cylindrical panoramas, 'flat' partial panoramas and even spherical 360x180 degree panoramas
No need to keep the camera level: PTGui can stitch rotated and tilted images
Virtually unlimited output size: create Gigapixel panoramas from hundreds of images!
Layered output allows full control over the final stitched result
PTGui stitches most panoramas fully automatically, but at the same time provides full manual control over every single parameter. This enables stitching of 'difficult' scenes, where other programs fail.
Full 16 bit workflow for best image quality