Web-based document viewer: Vuzit

Vuzit(pronounced "views-it")is web-based software that provides universal office document viewing,security, auditing, and search. Vuzit allows content publishers to embed documents in their web pages(similar to how YouTube distributes video)thus maintaining consistent branding and site navigation. Document auditing and statistical analysis enables content publishers to analyze the usage of their documents to create new revenue streams and optimize workflow.
http://vuzit.com