Browser extension for Firefox and Chrome - identifies software used on websites
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Wappalyzer is a browser extension that uncovers the technologies used on websites. It detects content management systems, web shops, web servers, JavaScript frameworks, analytics tools and many more.


Adding a new application

  • Edit share/apps.json
  • Add a 16x16 PNG image to share/images/icons matching the application name.
  • Provide the URL to the application's website when submitting a pull request.


"Application Name": { 
	cats:    [ "1" ], 
	headers: { "X-Powered-By": "Application Name" },
	url:     ".+\\.application-name\\.com",
	html:    "<link[^>]application-name\\.css", 
	meta:    { "generator": "Application Name" },
	script:  "application-name\\.js",
	env:     "ApplicationName",
	implies: [ "PHP" ]


Wappalyzer is multi-platform. The main code lives in the share/ directory and platform specific code in drivers/. The sections below describe how to set up a development environment for the various existing drivers.

To keep files synchronised between drivers, run the script (UNIX-like systems only, Windows users can use links.cmd.)

Mozilla Firefox

  • Place a file called in the extensions directory in your profile folder (~/.mozilla/firefox/xxxxx.default/extensions/ on Linux) containing the full path to drivers/firefox.
  • Restart Firefox
  • Navigate to about:config and set extensions.wappalyzer.debug to true.
  • Ctrl+Shift+J brings up a console for debugging.

Google Chrome

The Chrome version needs some love, if anyone wants to pick it up. It's currently not as feature-rich as the Firefox add-on (although partially due to API limitations.)

  • Navigate to about:extensions
  • Check "Developer mode"
  • Click "Load unpacked extension..."
  • Select drivers/chrome/


Beta version available for testing at


The HTML driver serves purely as an example. It's a good starting point if you want to port Wappalyzer to a new platform.

  • Navigate to drivers/html/


The PHP driver requires the V8js class. Installing V8js using PECL on Debian Linux or Ubuntu should be very straight forward:

  • # aptitude install php5-dev php-pear libv8-dev
  • # pecl install channel://
  • # echo "" > /etc/php5/conf.d/v8js.ini

Runnning Wappalyzer from the command line:

$ php drivers/php/index.php

Running Wappalyzer inside a PHP script:


$wappalyzer = new Wappalyzer($url);

$detectedApps = $wappalyzer->analyze();

Mozilla Jetpack

Work in progress, experimental. See

Unofficial drivers and ports


A Python driver by @ebradbury.


A Ruby port by @skroutz.


Wappalyzer on Firefox: