Burp Suite is an HTTP proxy, developed by PortSwigger (https://portswigger.net/). I think this HTTP proxy is more often used by security guys, despite being a private tool and not free; however, there is a free edition available too. The difference between the free and the private editions is the vulnerability scanner included in the private edition, which is great.
As Burp Suite is the basic tool for all bug bounty hunters focused on web applications, I will take more time explaining it.
Firstly, let's take a look at Burp's main screen:
In my opinion, Burp's interface is a little confusing at first, because of the large number ...