IP Pig Port Scanner

IP Pig Port Scanner is a simple Windows freebie that can scan your computer for open ports.
The application doesn't come with complex features that could confuse users, but instead it focuses just on the essential options to serve its purpose.
That's why you get a fairly basic interface grouping all settings in just a single screen. Average computer skills should be enough to figure out how to use this app, especially because there's no help manual available for the time being.
User input is minimal, so you're only asked to write down the IP address of the target machine and the port rage. A results panel shows the status of each port, while stats are displayed at the bottom of the window.
You can filter the results in order to see only the closed, open or all ports, with brief figures displaying the number of open, closed, filtered and total scanned ports.
As you can see, you're not allowed to scan an IP range, so only one target at a time is supported.
The good thing is that IP Pig Port Scanner is a pretty fast app and it doesn't affect the overall system stability in any way. No administrator privileges are required on Windows 7 workstations.
All in all, users trying to completely secure their computers may find the application helpful, but experienced users are very likely to look for a more advanced app. IP Pig Port Scanner has nothing more than very basic port scanning features, while configuration options are completely missing.