Memeo Connect for Google Apps is a desktop application that sync's desktop files with the Google Docs cloud. It helps with file conversions and is available for both Mac and Windows.

Google just started rolling out an all-in-one app called Google Essentials for Windows, which is meant to be a convenient way to discover and install the most prominent Google apps.

How to download your Google Docs documents Downloading a Google Doc document lets you open it in desktop word processors (for example, Microsoft Word) and transfer it to physical storage mediums.