I haven't played with it myself (though I intend to) but Lucene might be an option. http://lucene.apache.org/java/docs/index.html http://lucene.apache.org/java

I haven't played with it myself (though I intend to) but Lucene might be an option. http://lucene.apache.org/java/docs/index.html http://lucene.apache.org/java/docs/index.html It has also been ported to the zend framework if PHP is your thing.