Solar System Scope is described as '3D simulation of the Solar System and night sky - real time virtual orrery and observatory' and is a Star Map in the education & reference category. There are more than 25 alternatives to Solar System Scope for a variety of platforms, including Windows, iPhone, iPad, Mac and Android. The best alternative is Stellarium, which is both free and Open Source. Other great apps like Solar System Scope are Celestia, Space Engine, Sky Map and Gaia Sky.
Celestia is an application for real-time 3D visualization of space, with a detailed model of the solar system, over 100,000 stars, more than 10,000 galaxies, and an extension mechanism for adding more objects.
Most users think Celestia is a great alternative to Solar System Scope.
Space Engine - a real-time 3D space simulator, procedural universe generator and visualiser. It lets you explore the universe in three dimensions, starting from planet Earth to the most distant galaxies.
Mitaka is software for visualizing the known Universe with up-to-date observational data and theoretical models. Mitaka users can seamlessly navigate through space, from the Earth to the edges of the known Universe.