CurrPorts - CurrPorts displays the list of all currently opened TCP/IP and UDP ports on your local computer.
TCPView - TCPView is a Windows program that will show you detailed listings of all TCP and UDP endpoints on...
TcpView For Linux - TcpView For Linux. Touch screen friendly design graphical network connections viewer for Linux.
NetStat Agent - At whatever point you open a site association through your program or download documents, you are opening TCP/UDP connions.
LiveTcpUdpWatch - LiveTcpUdpWatch is a tool for Windows that displays live information about all TCP and UDP activity on your system.
TCPEye - TCPEye is an easy-to-use monitoring application that will display a list of all network processes.