SearchBlox is a Java based search software build with Apache Lucene/Solr. It is open source, and runs on both Windows and Linux. Is easy to install and have a good webbased administration interface.
You can try a demo of SearchBlox online here.
Search result page
SearchBlox has a classic looking search result page.
Most hits has a titel, three lines of hillited text extract and some meta data on the bottom.
SearchBlox has a good web based administration interface.