Sequence Generator Pro is described as 'Image capture suite for astronomy photography' and is an app in the education & reference category. There are more than 10 alternatives to Sequence Generator Pro for Windows, Mac, Linux, iPhone and Raspberry Pi. The best alternative is FireCapture, which is free. Other great apps like Sequence Generator Pro are SbigControl, SharpCap, BackyardEOS and N.I.N.A..
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.