Is there a nice, graphical, packet sniffer for Mac OSX?

Is there a nice, graphical, packet sniffer for Mac OSX?

I have Wireshark and have used tcpdump, but I was wondering if there was a nice GUI to capture and view packets on the Mac. Ideally, something that is protocol aware, so that it knows how to break up an HTTP request, is able to show SMTP information in a cleaner way than a tcp dump. I know there are a number of HTTP specific tools that fit this bill, but I'm looking for something that is more general.

Asked by: Guest | Views: 189

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Guest [Entry]

I'm a big fan of Charles, which isn't exactly a packet sniffer but does the same thing by using an internal proxy. It has a fantastic GUI and is extremely intuitive. Unfortunately, it's also $50, but has a 30-day trial.