1)   Effective File Search 5.4
Effective File Search is a sophisticated but simple in use tool, performing advanced search for any file on a PC or local network. It supports all known file formats, allows filtering by file date and size and has different after-search operations.

 2)   Book Search Pro 2.0
This is an easy-to-use search tool. It allows you to search thousands of PDF, DOC, PPT, RTF, XLS files from internet. It's as easy as you're googling. You just type keywords and hit enter, then you will get thousands of results instantly.

 3)   Free PDF Downloader 1.0
This is an easy-to-use eBooks search and download tool. It allows you to search millions of PDF files from internet. It's as easy as 1-2-3. You search it, drag it and download it. Enjoy your reading with internet huge free resource.

 4)   Instant Document Search 1.9
Very fast document search engine for your computer or local network. Support of MS Office files, WordPerfect, PDF, web pages, plain text files and other documents. Instant Document Search is easy to use, but powerful tool.