(In reply to comment #0)

I would like offline version of wikipedia,just like Encarta and others

Offline versions of Wikipedia are available at http://dumps.wikimedia.org/ and in other various forms (search around for "offline wikipedia", "wikipedia on a stick", etc.). There are also export options such as "print to PDF" that are currently available.

If there are _specific features_ you would like to see in the dumps or in offline browsing, please file bugs for those.