I've been using this 'HttpFox' FF add-on, and it's awesome: https://addons.mozilla.org/en-US/firefox/addon/6647
It is a HTTP analyzer (debugging proxy) that shows HTTP requests/responses/content/headers/etc.
It works similar to Fiddler for IE.
It gives much more info than other similar FF add-ons like 'Live HTTP Headers'
Thx. Thats very usefull.
Great, this is really useful! I was not aware of it.
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