And what results did Google and other search engines give you? Please ShowSomeEffort.
By the way, your requirement is ridiculous. No program can handle any type of file, mostly because there are so many file types around. I can even create a complete new one if I choose to. you should focus on a select group, starting with the usual: plain text, HTML, images, Office, Open Office. I believe that OpenOffice.org can handle most (if not all) of these. Check out how to run OOo in server mode.