Apple - Is there an OS X equivalent to the web debugging proxy Fiddler?

Stuff that's Free:

• Burp Suite
• WiireShark
• ParosProxy
• NetTool
• LiveHTTPHeaders
• Safari WebInspector Network Tab
• FireBug

Stuff that Costs:

• $1.99 - HTTPClient
• $15.00 - HTTP Scoop
• $50.00 - CharlesProxy

I use CharlesProxy, and while it isn't as scriptable as Fiddler, it does the job. And with single license key, you can run it on all OSes (it's written in Java).

My needs were little different when I needed it ... I used it to debug webdav connections or to debug http communication between servers.

These are both free and haven't been mentioned so far. I found that both of these are far superior to the X11 Wireshark.

• Cocoa Packet Analyzer
• Packet Peeper