Portscan 

SkPortScan ActiveX Control is a lightweight and powerful port scanner control.
It allows developers to integrate port-scanning capabilities into their applications.
SkPortScan can be used for network exploration or security auditing.
SkPortScan......

Essential NetTools is a set of network tools for diagnosing networks and monitoring your computer's network connections.

NetStat: displays the list of your computer's network connections, information on open TCP and UDP ports, IP address, and c......

MegaPing is the ultimate must-have toolkit that provides all essential utilities for Information System specialists, system administrators, IT solution providers or individuals.
It includes:
Scanners: Comprehensive Security Scanner, Port scanner......

 Portscan