Siril

For the moment this page will show mainly links.

Siril Website

Siril manual

Youtube:
Siril Stacking "edit along" with downloadable files to practice along with the presentation

StarnetAstro:
Starnet module for some reason to be installed via the hamburger menu (the 3 lines in the box top right). In the Mac this is problematic as Apple considers this executable not safe. Just keep on pounding on it to fit in. I did. No idea what it does so for the moment I can't confirm if it is functioning.