Brupt.com: Document Search Engine. Find Word, PowerPoint, Excel or PDF files
Brupt makes use of the FileType operator and searches through Googles search index to show Word docs, PowerPoint decks, Excel sheets or PDF files depending upon users selection.
There are many such search utilities available for files like MP3, Exe’s, etc… You can create your own search engine based on the filter you specify. Click here to visit Google Custom Search and create your own with just a few clicks.