Large amount of text based documents to index and make searchable via an web or desktop interface, what should I consider?

I have a large amount of text 开发者_如何转开发based documents (EDI Files, iDocs, etc) that I would prefer to make searchable via a web based interface or desktop interface. I looked into a few options like full text search w/mysql and Sphinx. However, I wanted to see if there was something like a google desktop search but for multiple users. I'm open to anything, suggestions appreciated.

Thanks

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By hosted do you mean like this?

http://indextank.com/

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There's been a couple of questions on SO about this.

See: Google-like Search Engine in PHP/mySQL
And: Integrating search on a website where the backend is MYSQL