Put some really clever stuff here
Helmut Dersch's web page (down for about a year, due to pressure from IPIX)
Current mirror of Helmut Dersch's homepage
Current mirror of Helmut Dersch's homepage
Max Lyon's updated version with all the latest improvements and fixes
Modified versions that bypass the iPIX fisheye restriction (you don't need these unless you have a 180 degree circular fisheye)
PT Picker GUI, Convenient, but not very powerful. Freeware, comes with Panorama Tools
PTools Pixel Picker GUI, better for picking points than PT Picker. Freeware
PT Viewer Viewer, lets you immerse yourself in your panoramas. Build virutal tours. The next best thign to being there. Freeware, open source
PT Assembler GUI, very powerful yet very friendly. Shareware
PT Gui GUI, probably the most powerful one there is. Shareware
PT Open GUI GUI, Powerful, but incomplete. Open source freeware, runs fine on Linux with Wine
PT Open GUI Developers site on SourceForge
PanoCube Converts panoramas to QTVR. Freeware
FSPviewer Viewer, lets you immerse yourself in your panoramas. Build virutal tours. The next best thign to being there. Freeware
PT Mac GUI. More powerful than PT Picker, but not as powerful as the PC programs. Shareware
Panorama Tools FAQ Answers for many Frequently Asked Questions
PanoGuide Information on panorama equipment, techniques, and software
J. Brian Caldwell, Ph.D. Stitching large mosaics, correcting lens distortions
Helmut Dersch lots of tutorials, panoramas, perspective, distortion, color
Nick Gordon Finding lens nodal points
John Houghton Straightening horizons, PhotoShop blending, morphing
Sascha Kerschhofer Beginners guide
Kevin Kratzke Fixing the zenith and nadir, PhotoShop masking
Erik Krause Correcting distortion
Big Ben Kreunen Very comprehensive tutorial
Peter Murphy Successful hand held panoramas, lens calibration
Thomas Niemann Printable panoramas
Philo Good general tutorial, correcting dostortion, home made panorama heads, wsing a piece of string instead of a $400 panorama head, panorama lampshades (no kidding). He's also a noted authority on Lego (I'm not making that up, either)
Michel Thomby Comprehensive nodal point tutorials
iPIX makes panorama software. They have a patent on the use of 180 degree fisheye lenses to create panoramas. Many people believe this patent to be worthless, citing much accessable prior art. However, iPIX has an abundance of money and lawyers, while all the community of freeware software developers has is love, so they usually win the battles, anyway.
Read about this alleged abuse of the patent system
More about this issue
Still more about this really scary issue