Mapping application available as free download to Mac users Google Inc. has released a Mac OS version of Google Earth, extending to Apple Computer Inc. users the flashy mapping application that has been wowing Windows PC users since its launch last year, the Mountain View, California, company said Tuesday.Google Earth, available as a free download, taps a multiterabyte database of aerial and satellite images to let users “fly” around the globe using a video-game type user interface. Users can also save and share searches, and add notes.The application can also retrieve local business listings from Google Local for the U.S., Canada and the U.K. It provides detailed road maps for these three countries as well as Western Europe, according to Google. The Windows version exited beta, or test, status on Tuesday, the same day the beta version for Mac OS 10.4.x was introduced, Google said.Though most PCs run Windows, there are benefits beyond user numbers for Google in offering Google Earth for the Mac OS because being associated with Apple carries a certain prestige, said Greg Sterling, an analyst at The Kelsey Group.Moreover, many Mac OS users have a high profile and are computer industry thought leaders, he said. “Google can port Google Earth to the Mac OS at a relative low cost to themselves in terms of resources,” Sterling said. “It lets them reach an influential user population and appear fair and even-handed to Mac users. It’s as much a public relations move as anything else.”Google Earth Plus (US$20 per year) and Google Earth Pro ($400 per year), which are more sophisticated PC versions of the application, aren’t yet available for the Mac OS, Google said.There is also a server-based, multiuser version called Google Earth Enterprise. The Google Earth products are based on applications Google acquired when it bought Keyhole Corp. in 2004. Software DevelopmentDatabasesTechnology IndustrySmall and Medium Business