Google Docs (docs.google.com) is an awesome online word processing and presentation creation suite. If you are addicted to use of Microsoft Office for document creation and processing, then give try to Google Docs (it is worthy MS Office alternative which is all free for use). Now you do not need to login to try and demo Google Docs usefulness.
Try Google Docs directly with login
Goto Google Docs demo to try Google Docs without having to login using Google account. It allows you to try features of Google Docs for creation of: documents, spreadsheets and drawings. In demo mode, you can try majority of Google Docs features including real time collaboration. However, you cannot save created documents (for that you need to login using Google account).
Still, this is very good – as new users would like to try Google Docs interface and functionality before taking the trouble of logging and associating their Google account with this service. As pointed by GOS blog, ability to create and upload documents on Google Docs without account login for sure will be great. Hopefully, Google is listening!