Firefox plug-ins for web security testing

Firebug

HTML viewing and editing, JavaScript consoles, network condition monitoring, debugging, editing, and even altering the CSS, HTML, Dom, and JavaScript code for any Web site. Primarily for development

Oil Monkey Greasemonkey

By scripting to change the functionality of the page being visited. Makes visiting websites easier to read or easier to use. The ability to fix Web page rendering flaws without bothering the webmaster. can automatically get data from other websites, so that two sites better link up with one another. The main custom Personalized page

JavaScript Debugger

Debug JS

Flagfox

Displays the flag that describes the current server location, which can be used to reverse-locate the location of the server by IP address. There are other useful features such as whois, copy IP, server information, Alexa,ping,traceroute and many more

Tamper data

View and modify the header and POST parameters of the Http/https, which can be used to track HTTP requests and responses and to remember

Live HTTP Headers

Real-time monitoring of initiated HTTP requests and responses, and the ability to re-initiate requests after request parameters are modified

Modify Header

Another plugin to modify the request header

Cookies manager+

View, modify cookies

Hackbar

Toolkit, you can easily control the modification URL, there are some encoding conversion, encryption tools, SQL, XSS tools

Wappalyzer

Check which Web applications a website uses such as blog engine, CMS, e-commerce program, Statistics tool, host Control Panel, wiki system and JS framework, etc.

User Agent Switcher

Switch Browser user agent, can disguise as other platform/Brand browser

Foxyproxy

Switch Network proxy

Awesome screenshot Plus

Screen Cutting

Show My Password

Show your input password in clear text

All-in-one Sidebar

Sidebar, like Opera browser. You can put some plug-in buttons here, saving space on the screen up and down

This is a collection of Firefox's official website.

There are many plugins not mentioned, to be continued

Firefox plug-ins for web security testing