PixInsight - A powerful deep sky stacking application for astrophotography.
DeepSkyStacker - DeepSkyStacker is a freeware for astrophotographers that simplifies all the pre-processing steps of...
APT (Astro Photography Tool) - APT stands for "AstroPhotography Tool" and it is like Swiss army knife for your astro imaging sessions.
RegiStax - Photography, Astronomy, Image, and Astrophotography
N.I.N.A. - NINA is a night time imaging and astronomy software.
Nebulosity - Nebulosity is designed to be a powerful, but simple to use capture and processing application for Windows and Mac.