Winstars 3 is a planetarium software for Linux, Windows, macOS and Android. It is completely free for Linux users and don’t need to pay for anything. But windows version is not completely free you need to pay for user’s licence to activate some program features. It comes with OpenNGC, EDD and Gaia DR2 catalogues support. Using this you can access more then 1.7 billion stars, 30,000 galaxies, nebulae and star clusters. In Winstars 3 you can control direction of observation by mouse. It comes with 3D interface and 3D outline of the planetary orbits. You can also control a large range of telescopes in this program.