PTgui - PTGui is panoramic stitching software.
Avogadro - Avogadro is a free, fantastically easy to use molecule editor.
Hugin - Hugin is an easy to use cross-platform panoramic imaging toolchain based on Panorama Tools.
ImageJ - and Other Health Care
PanoramaStudio - PanoramaStudio can create seamless 360 degree and wide angle panoramic images.
ACD/ChemSketch - ACD/ChemSketch for personal and academic use brings the power of our structure drawing package to your home computer.