SearchBlox is completely browser-based and driven by powerful Java infrastructure. It supports both HTTP and Filesystem based crawling of documents. The presentation of results are driven by XSL stylesheets, which are completely customizable. The FREE Edition supports all popular formats including PDF, Word, PowerPoint, Excel, HTML, Text & RTF.
OK, so you want to stamp your document. Maybe you need to give reviewers some advice about the document's status or sensitivity. This tip from author Ted Padova demonstrates how to add stamps with the Stamp Tool along with related comments.