Apache Daisy CMS sytem
Daisy uses the Lucene search engine and both Word documents and plain HTML documents that I created were almost instantly searchable.
I like it!
PS. I have been planning on integrating my next release of KBtextmaster with Plone. I think that I will also supply a plugin for Daisy. KBtextmaster is a standalone service with an XML-RPC interface (and written in Common Lisp, BTW). I am tentatively planning on making any patches to Plone and Daisy (for accessing KBtextmaster vi XMLRPC) public domain. I have not really made up my mind yet - I still have about 150 hours left getting KBtextmaster ready so I will make final decesions on how to market it later. My consulting work load is fairly high right now, so I will be lucky to have a new version ready for sale by next spring.