Port Checker Informative - Port Checker
TEXAS -- http://www.diamondcs.com.au/
Port Explorer, Process Guard, and other helpful software.
Port Explorer allows you to see all the open ports on your system and what programs own them (called Port to Process mapping). Along with this ability it also has many tools including a packet sniffer, bandwidth throttling and country detection all in an easy to use graphical interface.
NEW: VERSION 3 JUST RELEASED !
Protect your system and security programs from attacks by other processes, including viruses, trojans and other hostile software. DID YOU KNOW that your antivirus and firewall programs are useless if they've been terminated by a trojan? Process Guard stops these attacks and alerts you, telling you exactly which programs are trying to attack others. Powerful kernel-mode protection that's easy to use for both novice and advanced users alike. ProcessGuard can even stop stealth rootkit trojans from installing - a capability unique to ProcessGuard.