Satscape is described as 'A satellite tracking program for Windows, Mac OS and Linux'. There are four alternatives to Satscape for Online / Web-based, Windows, Android and Android Tablet. The best alternative is Orbitron, which is free. Other great apps like Satscape are Heavens Above (Free), Uphere.space (Free) and See A Satellite Tonight (Free).
Easily track satellites so you can see them in the night sky. This free web app provides an easy interface to find where satellites will be located at any given time, even providing a sleek view from the ground using Google Street Maps.