SoftPerfect Network Scanner, an effective tool that will surprise you with its multi-threaded capabilities to scan IP, NetBIOS and SNMP.
    This powerful application provide a complete solution to network scanning. The tool comprises a free multi-threaded IP, NetBIOS and SNMP scanner and is accompanied with the most advanced features. The application is very handy for system administrators and users with the priority of system security. The tool is effective in pinging computers, scanning for listening TCP ports and to display all the system and hidden resources shared on the network. The other features included in the tool are; supports to mount shared folders as network drives, allows to browse them with the Windows Explorer, filters the results list and much more. The capable tool can also check for a user-defined port and report if it is found open.
    This must have tool, designed specially for system administrators resolve host names and auto-detects your local and external IP range.