What's the best cross-platform, localhost-only web server?

I'm writing a localhost-only search engine for 200MB of locally stored
text. I'm basing the search engine on Apache Lucene.

It should be lightweight, since it is just an occasionally used
application (and should easily startable and stoppable).

Lucene is natively Java, but has been ported to .NET, Mono, Perl,
Python, Ruby, C, C++, and several others.

I'm targeting Windows, OS X, Linux, and (hopefully) mobile variants of
those operating systems.

What server-side language and web server do you recommend for maximum
cross-platform compatibility and ease of installation?


Thanks,
Nathanael Jones