Voyager Astrophotography is described as 'Voyager is a multi core optimized software, resilient, with advanced built-in algorithms and advanced A.I. driven automatation for astro photography' and is an app in the Education & Reference category. There are more than 10 alternatives to Voyager Astrophotography for Windows, Mac, Linux, iPhone and Raspberry Pi. The best alternative is Qastrocam, which is both free and Open Source. Other great apps like Voyager Astrophotography are AstroImager (Paid), SbigControl (Paid), N.I.N.A. (Free, Open Source) and Nebulosity (Paid).
Qastrocam is a capture program to do astrophotography. It can control a telescope to do guiding with the images received from a V4L device. It can also control the extended features of a webcam modified to do long exposure (several seconds) captures.