Fast Port Scanner is a fast multithreaded port scanner that scans about 400 ports a second. It supports both the TCP/IP and UDP protocols. You can select address ranges to scan multiple interfaces or hosts. Any open ports will have the any suspect Trojans listed with it. This program is free when using Global Up Time website monitoring service.
Super Fast & Small multithreaded Port Scanner
Advanced IP/port scanner with built-in skills
TCP Port scanner Multi threaded.
Comprehensive set of Network security tools
Powerful and free network scanner