.pages

"Files with a .pages file extension are word processing documents created by Apple's "Pages" application which forms part of Apple's iWork office suite, a set of applications which run on the Max OS X and iOS operating systems, and also includes Numbers (for spreadsheets) and Keynote (for presentations). Pages is a hybrid application, first released by Apple in February 2005, that allows users to perform both word processing and page layout tasks. A direct competitor to Microsoft Word (part of Microsoft's "Office" suite) it originally aimed to take a more simplistic approach to document creation and editing than Word, stripping out many of Word's more complex features."

http://www.zamzar.com/fileformats/pages

Using Zamzar it is possible to convert PAGES files to a variety of other formats - http://www.zamzar.com/