If you have worked with IE you probably know there is **Developer tools** which can be access though `Tools` -> `Developer tools`. It will show you a window, by clicking on `Network` you can see something like the picture below:
![enter image description here](https://i.stack.imgur.com/CQ53k.png)

Here you can see **ALL** HTTP requests (with request and response headers and body). My question is this: Is there anything like this for Firefox?

**Note:** I'm using [Live HTTP headers](https://addons.mozilla.org/en-US/firefox/addon/live-http-headers/) and it's **NOT** what I want, because it doesn't show response body at all!!!