PanoPreviewer is a Photoshop plug-in for Mac OS X that allows you to preview equirectangular images as VR panoramas. Normally when editing an equirectangular image, you're constantly saving the file out and loading it into a utility to preview it and see what needs touching up. With PanoPreviewer the tedium of that process has been eliminated since you can now preview the panorama right in Photoshop.
