Free ports software for windows

Active Ports - easy to use tool that enables you to monitor all open TCP/IP and UDP ports on the local computer.
Active Ports maps ports to the owning application so you can watch which process has opened which port.
It also displays a local and remote IP address for each connection and allows you to terminate the owning processt.
Active Ports can help you to detect trojans and other malicious programs.

Open Ports Scanner monitors open TCP and UDP ports and applications that open them on your PC. Open Ports Scanner will open TCP and UDP ports on your PC. It brings you an enhanced functionality of a similar tool that comes with Windows operating system: netstat.
Open Ports Scanner in addition to the ports information available from your operating system, allows you to map an open port to the process running on your PC. You may easily catch spyware, malware and trojans when using this tool. Just search for suspicious TCP connections.
You may instantly terminate unwanted connections right from this software. Monitoring features include TCP or UDP view filter and refresh spped timer. Full list of displayed data includes: protocol name, process name, process ID, local port, local address, remote port, remote address and connection status.

"easy Look at Ports" is a free and useful multithread port scanner specifically made to scan and display opened TCP ports. Scanning a full connect method is fast and accurate, result of scan save to file. Utility was written to aid system administrators who manage networks and need to keep track of all opened ports.

AutoNOC Port Scan will rapidly analyze a PC to identify the available ports on a remote machine (and potentially vulnerable to break in).
AutoNOC Port Scan runs in parallel to instantly evaluate the services available on a remote device or node.