FSPViewer is a free viewer for spherical (equirectangular) panoramic images. It is designed for viewing local (hard-disk, network or CD) high resolution panoramic images at full screen and with very high image quality.
Based on PURE technology, ImmerVision's panoramic image viewers combine superior performance capabilities with optimal viewing ease on either a standard office PC monitor or a pocket computer. The "immersive" panoramic experience is no longer limited to desktop...
Panini is a visual tool for creating perspective views from panoramic and wide angle photographs. More than a pano viewer, more than a view camera, with features of both. For Linux/Unix, Win32, and Mac systems with OpenGL 2.0 +