gOffice is here but it's not from Google. gOffice is a free web based Office suite which has Word processor, desktop publishing, presentation and spreadsheet. However, Presentation and Spreadsheet are in the developement mode.

The best part of the suite is, after creating a document it directly exports it in PDF and you can save it on your computer. Earlier, I was using Writley but it does not exports your documents in PDF. Moreover, it has only word proccessing.

Thanks Sarah for the information