SoftPerfect Network Scanner is a free multi-threaded IP, NetBIOS and SNMP scanner with a modern interface and many advanced features. It is intended for both system administrators and general users interested in computer security. The program pings computers, scans for listening TCP/UDP ports and displays which types of resources are shared on the network (including system and hidden).

Changelog:
* Fixed incorrect SNMP uptime retrieval when a target host has been running over 100 days.
* Fixed incorrect SNMP string display where an ASCII string containing CR/LF was represented as a hex sequence.
* SNMP uptime column is now sorted properly as a number, not as string.
* Added multirange IP scan support (several different subnets can be scanned at once).

Program Information Category: Internet and communication Type: Free Version: 5.0.3 Size: 720KB Works on: Windows Product page: here