DocJax is a search engine for documents, which allows you to search documents and e-book from everywhere, preview them and even download them for free.

Search Engine for Documents - Docjax

DocJax also has a very effective and powerful crawling tool, it can even search Google Docs documents which are made permit for public viewing. Indexing of Zoho Writers’ made public documents, Box.net’s Web Documents has also been done.

:: You can find and download tons of documents and e-books ::