SoftPerfect Network Scanner 2.0
This is a multi-threaded IP, SNMP and NetBIOS scanner.
The program pings computers, scans for listening TCP ports and shows what types of resources are shared on a network. It also allows you to mount shared resources as network drives, browse them using Windows Explorer and filter the results list. SoftPerfect Network Scanner can also check for a user-defined port and report if it is found open, resolve host names and auto-detect your local IP range.