title: ASP.NET Search engine
body: <p>I am in the process of building a corporate web site. We are looking for any open source or paid search engine based on the ASP.NET. It should be able to</p>
  
  <ol>
  <li>Search web content of all the pages in the site. </li>
  <li>All office documents. etc. </li>
  <li>If we have some searach reseults filtering based on the user type and styff. </li>
  </ol>
  
  <p>Please let me know what kind of tools or software we need to consider. </p>