Koru is a new search interface that offers effective domain-independent knowledge-based information retrieval. Koru exhibits an understanding of the topics involved in both queries and documents, allowing them to be matched more accurately and evolving queries automatically and interactively. This understanding is mined from the vast investment of manual effort and judgement that is Wikipedia. This open, constantly evolving encyclopedia yields manually-defined yet inexpensive structures that can be specifically tailored to expose the topics, terminology and semantics of individual document collections.
This is provided within the elements of a normal web page. It requires nothing more than a standard web browser to use, so try it out!
A screenshot of Koru when investigating american airlines security