Adding a Search to your Site

Sharepoint, besides providing a portal framework, includes a search service for web sites. It can crawl, index, and provide web service to service search requests. SharePoint has advantages over using using Sql Server because it can search content not in the database (like word, and excel documents) and it has built in relevancy ranking system.

A much less expensive alternative to share point is easy search. It is only $250 and it even has google suggest features.

Of course there is always google search service and Google Search Appliance.