MaxIm DL (Popularity: )
http://www.cyanogen.com [commercial, demo available - Win95/98/NT/2000] Image processing and CCD camera control software for astronomical imaging. Supports Apogee, Celestron, FLI, HiSIS, ...
Auriga Imaging (Popularity: )
http://www.aurigaimaging.com Auriga Imaging's program RegiStar automatically registers (aligns) astrophotos -- no user intervention required.
AstroArt (Popularity: )
http://www.msb-astroart.com/ [commercial, demo available - Win95/98/NT] A complete software product for analysis and processing of astronomical images. With the built-in star ...