I find this app interesting and quite useful. It allows you to see the raw data that's being transmitting via your TCP/IP connection. I don't know much about what alot the data means... but I like to check that, when I use certain TCP/IP apps, the data (such as logins & passwords) are not being transmitted in plain text. Also, it's interesting to see the background noise that seems to be transmitted, from your computer, related to cookies, and what-not. I've never seen anything similar to it. I'd give it 5-stars if it had a "Help" section, or a manual, for better understanding of things. (And, the "Save" function doesn't seem to work).