[commercial, demo available - Win95/98/NT] A complete software product for analysis and processing of astronomical images. With the built-in star atlas based on the Guide Star Catalogue, it is also possible to perform astrometric and photometric calibration on your images.

Auriga Imaging's program RegiStar automatically registers (aligns) astrophotos -- no user intervention required.

[commercial, demo available - Win95/98/NT/2000] Image processing and CCD camera control software for astronomical imaging. Supports Apogee, Celestron, FLI, HiSIS, Meade, SBIG, and Starlight Xpress CCD cameras; video cameras, autoguiders, and filter wheels. ASCOM compliant.

Picture Window is a popular tool among serious amateur astrophotographers. By Digital Light & Color.

[commercial - Win95/98/NT] Image restoration program, it can restore and enhance defect images (ex. out of focus and noise).