ServerFiles.com is a server software & hardware directory for Network administrators & IT professionals, listing networking & server software for Windows 2003, Windows 2000, NT and Linux; and now also listing networking hardware solutions focused on server based computing.
Vote for NetworkActiv Scanner
A network scanner including the following features: Port scan (TCP/UDP/SYN), IP address range scan (ICMP/TCP/UDP), Trace-route, and Ping.
All features are integrated into one interface, which allows for fast action when you find a computer on a network, an open port, etc..