Astro Pixel Processor – Amazing cross-platform (Mac, Windows, Linux) software for processing deep sky images and mosaics. Excellent value for those stepping up to a better processing experience from DSS!
SharpCap – Excellent image capture software for dedicated astro cams.
PIPP – [FREE] Planetary Imaging Pre-Processor (Moon, Sun, Planets) before you get stacking, for Windows but runs with WINE under Mac and Linux
Registax – [FREE] Excellent, well known, planet, lunar and solar stacking software for Windows, but runs under WINE.
AutoStakkert – [FREE] Excellent, well known, planet, lunar and solar stacking software for Windows.