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

Solution 1:

Just to make sure you're not missing the obvious...you're aware that Wireshark does have a nice GUI, and is protocol aware? And has simple analysis features like "Follow TCP Stream" that making analyzing SMTP (and other text-based protocol transactions) so much easier?

Screenshots are here.

Solution 2:

There are quite a few. The search on macupdate turns up some of them:

• Cocoa Packet Analyzer

• Packet Peeper

Solution 3:

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.