Extender – Allows the security tester to load Burp extensions, to extend Burp’s functionality using the security testers own or third-party code (BAppStore).Comparer – A tool for performing a comparison (a visual “diff”) between any two items of data.It is capable of intelligently recognizing several encoding formats using heuristic techniques. Decoder – A tool for transforming encoded data into its canonical form, or for transforming raw data into various encoded and hashed forms.It can be used to modify requests to the server, resend them, and observe the results. Repeater – A simple tool that can be used to manually test an application.It can be used in conjunction with manual mapping techniques to speed up the process of mapping an application’s content and functionality.

Spider – A tool for automatically crawling web applications.Intruder – This tool can perform automated attacks on web applications. The intruder tool can test and detect SQL Injections, Cross Site Scripting, parameter manipulation and vulnerabilities susceptible to brute-force attacks.Scanner – A web application security scanner, used for performing automated vulnerability scans of web applications.This allows the interception, inspection and modification of the raw traffic passing in both directions. HTTP Proxy – It operates as a web proxy server, and sits as a man-in-the-middle between the browser and destination web servers.In addition to basic functionality, such as proxy server, scanner and intruder, the tool also contains more advanced options such as a spider, a repeater, a decoder, a comparer, an extender and a sequencer. It was developed to provide a comprehensive solution for web application security checks. The tool is written in Java and developed by PortSwigger Security. The free version has significantly reduced functionality.

Burp or Burp Suite is a graphical tool for testing Web application security.

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