Does anyone know of a good GUI HTTP testing client that runs on OS X? Something that will allow me to enter a request (URL, headers, body, etc.), and view the response, preferably in different formats (hex, text, etc.).
I found one called HTTP Client, but it's kind of buggy.
Google is failing me.
EDIT: Thanks for the responses so far. I found a pretty decent one called RESTClient, but I'd be interested to see if there are other good ones.