Google has added Slides, the latest version of its Docs presentation software, to its suite of offline applications, as it tries to play a spoiler role with the official releases of Microsoft Office 2013 and the home user version of Office 365 right around the corner. Slides users will now be able to view and edit presentations without an Internet connection, provided they are using the Chrome Web browser or a Chrome OS device.
A convenient way to edit your presentations offline. However, you can't edit spreadsheets offline yet and you need to use Chrome browser.
Android or iOS users still have to wait.