IPD LAN Manager and Tools 

This program promises to put small/medium businesses on equal footing with larger companies in regards to LAN Management, but at a fraction of the cost.
lan scanner port sniffer packet application remote network networking local area network manager management manage

xSharez scanner 

xSharez scanner is a multithreaded NetBIOS/SMB scanner designed for both network administrators and users interested in the network security issues.
netbios scanner smb scanner security scanner