CurrPorts

CurrPorts is a simple lightweight application that securely displays the list of all currently opened TCP/IP and UDP ports on your local computer.
This useful user tool not only displays the list of all currently opened TCP/IP and UDP ports on your local computer, but also displays the information about the process that opened the port. Other than that it also provides information about; the process name, full path of the process, information about the version of the process, process creation time, and the user that created it. The biggest advantage of this utility is to allow the user to securely close unwanted TCP connections, kill process opening ports, saves all information of the TCP/UDP ports to HTML file, XML file, or tab-delimited text files. With a simple user interface the utility is executable and is free from lengthy installation process or additional DLLs.
CurrPorts also supports the feature to automatically mark suspicious TCP/UDP ports with pink color.

CurrPorts displays the list of all currently opened TCP/IP and UDP ports on your local computer. For each port in the list, information about the process that opened the port is also displayed, including the process name, full path of the process, version information of the process (product name, file description, and so on), the time that the process was created, and the user that created it.
In addition, CurrPorts allows you to close unwanted TCP connections, kill the process that opened the ports, and save the TCP/UDP ports information to HTML file , XML file, or to tab-delimited text file.
CurrPorts also automatically mark with pink color suspicious TCP/UDP ports owned by unidentified applications (Applications without version information and icons)