EarthDesk is described as 'Xeric Design, Ltd. is a leader in global time and mapping software. Its flagship product, EarthDesk, for both Macintosh and Windows, is enjoyed by users in more than 140 countries' and is an app in the Travel & Location category. There are more than 10 alternatives to EarthDesk for a variety of platforms, including Windows, Mac, Android, iPhone and Android Tablet. The best alternative is TerraTime. It's not free, so if you're looking for a free alternative, you could try Desktop Earth or MeteoEarth. Other great apps like EarthDesk are EarthView (Paid), Living Earth Desktop (Paid), Living Earth (Paid) and Xplanet (Free, Open Source).