1. Amazon Web Services. URL http://aws.amazon.com. Amazon Web Services. URL http://aws.amazon.com.
2. Engineering @ Facebook's Notes: Scaling Out. URL http://www.facebook.com/notes.php?id=9445547199. Engineering @ Facebook's Notes: Scaling Out. URL http://www.facebook.com/notes.php?id=9445547199.
3. Google app engine. URL http://code.google.com/appengine/. Google app engine. URL http://code.google.com/appengine/.
4. Google docs and spreadsheets. URL http://docs.google.com. Google docs and spreadsheets. URL http://docs.google.com.
5. Microsoft office live. http://office.live.com. Microsoft office live. http://office.live.com.