This utility allows you to view all the network connections initiated by your computer. It supports both popular protocols (TCP and UDP). Although the application has a very small file size (EXE occupies around 60 kilobytes), the developer managed to pack a lot of useful features.
The information it offers is comprehensive, neatly organized in columns which you can enable, disable or reorder to suit your specific needs. If you don't like the column layout, you can view details about a connection in a dialog which groups information in rows.
Exclude and include filters make it easy to manage your connections if you have a large number of them. You also have the possibility to search through the results, by using a text string.
Judging by the version history, this program is updated often and the developer always adds some useful functionality. For example, an option was added to make the computer signal you with a beep each time a new port is open. Or, if you prefer, you can be notified in a balloon popup. This allows you to easily monitor the behavior of certain programs without needing to constantly check the main window of CurrPorts.