If you think that most of Google’s products only work online, then you’re probably right.. until now. As of the moment, they’re launching a GMail app, as well as updates to their Calendar and Docs that will maximize productivity even when the user is offline. As told by Google’s Group Product Manager Rajen Sheth, the problem lies that when people need to access their calendar and mail offline, they really have to.
Read more: http://www.newtechie.com/2011/09/google-launches-offline-gmail-calendar.html