Unix software
Basic Library
Panorama tools is a high quality and free panorama stitching software package.
Stitching Software
Hugin provides an easy to use graphical user interfaces for Panorama tools. There is a FreeBSD Port under preparation
Helper
Autopano: Automatically identifies control points. Works with Hugin, PTAssembler, PTGUI
Enblend: Overlays images so to make the seam invisible. Works as a plug-in for Hugin, PTAssembler, PTGUI
ImageMagick: Batch process images before using Enblend, e.g. when you have large black areas because of a pitch angle.
PanoCube: Converts equirectangular (360x180) panos to QuickTime cubic movies.
Viewer
Plugins for the Gimp
Non-Panoramic use
PT Lens lens distortion correction
Other Software
PanoPoints: Perl-Based control point picker for use with Panorama Tools