I have been working with this product called Longitude for sharepoint for some time now. I must say this is a great product that extends shrepoint search capabilities. It lets users preview documents without the necessity to download them as shown:
Some of the other kool features of the product are:
- Faceted Navigation (let users refine results based on grouping by document metadatas)
- Popularity tagging
- Key concepts (based on document tagging)
- Documents preview, download, print etc functionality right on the search results page.
- XSLT based customization of Search UI
- Parametric Search
- Hit highlighting
- Wild card Search
- Enhanced People Search etc
With these features, finding the relevant information is 10 times faster than with the default sharepoint search.
For additional info on the product, visit http://www.ba-insight.net
Sanjaya on SharePoint/Microsoft technologies 