These Addons should help me by solving challenges or checking websites for security issues.
The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of a browser.
FoxyProxy is an advanced proxy management tool that completely replaces Firefox's limited proxying capabilities. For a simpler tool and less advanced configuration options, please use FoxyProxy Basic.
Use tamperdata to view and modify HTTP/HTTPS headers and post parameters...
View HTTP headers of a page and while browsing.
Control what gets sent as the HTTP Referer on a per-site basis.
If you have multiple logins for web based e-mail accounts (like Gmail and Yahoo! mail), then CookieSwap enables you to easily switch between those different accounts by swapping the 'cookies' that the sites use to know you.
Displays the current SSL/TLS cipher and certificate chain in the Add-on bar and Site ID dialog
Transforms typed or static text to L337, ROT13, BASE64, HEX, URL, BIN, DES, AES, Morse code, DVORAK keyboard layout and to lower/to upper case functionality, Leet Font...
View Dependencies adds a tab to the Page Info window, in which it lists all the files which were loaded to show the current page.
CryptoFox is an encryption/decryption tool for Mozilla Firefox, with dictionary attack support for cracking MD5 passwords.
The AS Number Extension displays interesting information the Internet Service Provider of every website visited. Along with it come some additional statistics for those who want to know what happens behind the Webs shiny surface. All data is...