UPDATED (2009-12-22)!

A powerful, fully configurable, and extensible library utilizing Lucene for indexing Umbraco content to allow for fast content searching. It is extremely easy to setup and caters for simple indexing/searching to very complex index/searching by utilizing it's fully extensible codebase and it's event model.

Visit the links below for the binaries, source code and documentation.

• Source @ CodePlex: http://umbracoexamine.codeplex.com/
  • Download the latest source package to get the latest release. A proper release will be made in early Jan 2010.
  • The latest source also contains a test/demo project for a reference to configuration settings and how to use the codebase.
    
• Issue Tracker @ CodePlex: http://umbracoexamine.codeplex.com/WorkItem/List.aspx
• Discussions @ CodePlex: http://umbracoexamine.codeplex.com/Thread/List.aspx
  
• Documentation and downloads:
  • Umbraco Examine (Umbraco 4.x)
  • (this is a reference to outdated documentation, but the idea is nearly the same, up to date documentation and examples coming soon!)