SoftPerfect Network Scanner is a free multi-threaded IPv4/IPv6 scanner with a modern interface and many advanced features.
SpaceSniffer is a freeWare (donations are welcome) and portable tool application that lets you understand how folders and files are structured on your disks.
Does the thought of setting up a network stress you out? Relax. Network Magic Essentials helps you easily share an Internet connection, printers and files with point-and-click ease.