Xeric Design (http://www.xericdesign.com) has updated EarthDesk, its real-time dynamic desktop map, to support screen spanning in Mac OS X Mavericks and Yosemite.
The app replaces your static desktop with an image of the Earth showing current sun, moon and city illumination, as well as global cloud coverage. The software operates silently in the background, keeping your desktop updated while you work. EarthDesk’s dynamic desktop is continuously displayed as your desktop background.
Single user copies may be purchased for US$24.95. Upgrades are available for $12.95 for licensed users of version 5 and $17.95 for licensed users of versions 1-4. Cloud access is available starting at $9.95 for a single user. A bundle including EarthDesk and high-res cloud access is $32.95.