title: SDK to Read PPT , xls and .doc file in iOS
body: <p>In my application i need to launch ppt , xls, pdf files. i am sure, iOS Framework support to view PDF files without launching any other application, but is there any way to open ppt , xls doc , if yes please give me any pointer, </p>
  
  <p>I believe, there should be some SDKs available , which can be integrated through an application and can make use of it. </p>