From Sorin Ostafiev:
Intranet File Sharing is a powerful utility designed to search local area networks for all kinds of files. It helps you save your time and money when you need to find some information in your Local Area Network (LAN). You can search for specific files or for files of a certain kind (e.g. you can search for documents or for multimedia files in your network). Intranet File Sharing features a very fast web based search engine (search millions of files in a few seconds), ability to search hidden network resources, IP subnetworks and much more.