DiamondCS

ProcessGuard is a robust security software for Windows, providing kernel-level protection against numerous threats such as spyware, rootkits, and unauthorized process termination or modification.

Port Explorer displays open network ports and their owners on your system. It offers a packet sniffer, bandwidth throttling and country detection features. It is an all-in-one solution for network monitoring.

OpenPorts is a free console software for Windows NT4/2K/XP, showing open TCP and UDP ports on your computer along with the owner process. It provides dependable and precise outcomes.