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.js
  • 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/i },
    url:     /.+\.application-name\.com/,
    html:    /<link[^>]application-name\.css/, 
    meta:    { 'generator': /Application Name/i },
    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 system only, Windows user will have to manually copy the files across.)

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/


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/


Beta version available for testing at


Wappalyzer on Firefox: