Google has introduced Google Applications for Government. This is currently available only for United States. Google Apps for Government will be same as you know the Applications but it will come with extra security. It will be hosted separately and not with the general one.
Google Applications is the first suite of cloud computing which get the Federal Information Security Management Act (FISMA) certification. The FISMA law applies to all information systems in use by U.S. federal government agencies to help ensure they’re secure.
And we’re not stopping with FISMA certification. Google Apps for Government will continue to evolve to meet unique government requirements. Google Apps for Government stores Gmail and Calendar data in a segregated system located in the continental United States, exclusively for our government customers. Other applications will follow in the near future. The suite is a “community cloud”—as defined by the National Institute for Science and Technology—to support the needs of our government customers. Google Apps for Government is available now to any federal, state or local government in the United States.
Read here for more: Introducing Google Apps for Government