Data-sheet.net – PDF Search Engine
Data-Sheet is a well designed search engine that limits your search results to PDF files. The appearance and performance of the engine are similar to Google which should come as no surprise given that it is powered by Google.
The engine works well and testing of the engine showed that it delivers a good number of results, albeit perhaps not quite as many as the leading PDF search engines. Once you’ve found what you are looking for, you won’t have to bother surfing around to find the PDF in question since Data-Sheet opens up the document in question as soon as you click on the link. So if you need a reliable and quick way to search for PDF documents, Data-Sheet is definitely worth a try.