You can download an unregistered "trial" copy for free; however, until registered with a valid serial number, it will only display a small portion of the database and will not control telescopes.
Unlike many programs that only show the sky from Earth, Voyager allows users to place themselves anywhere in the solar system or even thousands of light years beyond into interstellar space. Download and Installation carina-voyager-v4-5-7-full-version-download
It can control computer-driven telescopes, allowing the physical mount to "slew" (move) to objects selected on the computer screen. You can download an unregistered "trial" copy for
Comprehensive Guide to Carina Voyager v4.5.7: Features and Downloads carina-voyager-v4-5-7-full-version-download