Go to Google Language Tools.

Observe that under the section "Use the Google Interface in Your Language" are options for Latin, Pig Latin, Klingon, Elmer Fudd and my personal favorite - Bork, bork, bork!

I'm sure this also comes as a relief to native speakers of hacker and Esperanto. Sadly, us speakers of Quenya and Sindarin are still left to search the intarwebs in some clumsy non-Tengwa method.