How-To Geek

Discover What Powers Your Favorite Websites

Have you ever wondered if the site you’re visiting is powered by WordPress or if the webapp you’re using is powered by Ruby on Rails?  With these extensions for Google Chrome, you’ll never have to wonder again.

Geeks love digging under the hood to see what makes their favorite apps and sites tick.  But opening the “View Source” window today doesn’t tell you everything there is to know about a website.  Plus, even if you can tell what CMS is powering a website from its source, it can be tedious to dig through lines of code to find what you’re looking for.  Also, the HTML code never tells you what web server a site is running on or what version of PHP it’s using. 

With three extensions for Google Chrome you’ll never have to wonder again.  Note that some sites may not give as much information, but still, you’ll find enough data from most sites to be interesting.

Discover Web Frameworks and Javascript Libraries with Chrome Sniffer

If you want to know what CMS is powering a site or if it’s using Google Analytics or Quantcast, this is the extension for you.  Chrome Sniffer (link below) identifies over 40 different frameworks, and is constantly adding more.  It shows the logo of the main framework on the site on the left of your address bar.  Here wee see Chrome Sniffer noticed that How-To Geek is powered by WordPress.


Click the logo to see other frameworks on the site.  We can see that the site also has Google Analytics and Quantcast.  If you want more information about the framework, click on its logo and the framework’s homepage will open in a new tab.


As another example, we can see that the Tumblr Staff blog is powered by Tumblr (of course), the Discus comment system, Quantcast, and the Prototype JavaScript framework.


Or here’s a site that’s powered by Drupal, Google Analytics, Mollom spam protection, and jQuery.  Chrome Sniffer definitely uncovers a lot of neat stuff, so if you’re into web frameworks you’re sure to enjoy this extension.


Find Out What Web Server The Site is Running On

Want to know whether the site you’re looking at is running on IIS or Appache?  The Web Server Notifier extension for Chrome (link below) lets you easily recognize the web server a site is running on by its favicon on the right of the address bar.  Click the icon to see more information.

Some web servers will show you a lot of information about their server, including version, operating system, PHP version, OpenSSL version, and more.


Others will simply tell you their name.


If the site is powered by IIS, you can usually tell the version of Windows Server its running on since the IIS versions are specific to a version of Windows.  Here we see that is running on the latest and greatest – Windows Server 2008 R2 with IIS 7.5.


Discover Web Technologies Powering Sites

Wondering if a webapp is powered by Ruby on Rails or ASP.NET?  The Web Technology Notifier extension for Chrome (link below), from the same developer as the Web Server Notifier, will let you easily discover the backend of a site.  You’ll see the technology’s favicon on the right of your address bar, and, as with the other extension, can get more information by clicking the icon.

Here we can see that Backpack from 37signals is powered by the Phusion Passenger module to run Ruby on Rails.


Microsoft’s new Office Online apps is powered by ASP.NET…


And How-To Geek has PHP running to power WordPress.



With all these tools at hand, you can find out a lot about your favorite sites.  For example, with all three extensions we can see that How-To Geek runs on WordPress with PHP, uses Google Analytics and Quantcast, and is served by the LightSpeed web server.  Fun info, huh?



Download the Chrome Sniffer extension

Download the Web Server Notifier extension

Download the Web Technology Notifier extension

Matthew digs up tasty bytes about Windows, Virtualization, and the cloud, and serves them up for all to enjoy!

  • Published 05/28/10

Comments (20)

  1. rue

    yup, but what about these frameworks. Do you have any post regarding frameworks

  2. Matthew Guay

    @rue – We’ve been running a series on starting and tweaking a WordPress site … check them out if you’re interested –

  3. Mike Turley

    Pretty cool, anything like this for firefox?

  4. Matthew Guay

    @Mike – I’ve use the ServerSpy extension on Firefox, which tells you what webserver a site is hosted on. As for the others, I’ll have to check into that.

  5. Dimitri Steyaert

    Wappalyzer does the same in Firefox:

  6. Jackie

    Nice tips, can you guess what I’m using for my website?!?

  7. web design ipswich

    This has been so useful, thank you so much! I am a total geekette and just discovered your blog, will be coming back!

  8. kuj

    the best !

  9. abdou

    thanxxx very much a very great website

  10. jeni

    If you want to play with this work go visit

  11. Chuck Frraro

    Great article! I am an extreme music lover and video producer who specializes in video mantage.

  12. That Free Thing Review

    Very informative thanks for sharing.I checked out some of your Google Ads as well.Your Blog is very well layed out and is a pleasure to visit.

  13. Ps3 Home Items

    You know, I never knew how to do this before. I had no clue. So basically, Chrome Sniffer is a plugin to find out what site a platform runs on? I’m trying to see if I read this right because if so I really need this.

  14. Game Hero

    Written by a group of the top minds in the academic world of videogame studies, this blog talks about viritual worlds and massively multiplayer online games.

  15. Make Money With Photography

    Good tips works very well, plugins are handy to any webmaster.

  16. Kiran

    Be aware for using of Facebook that Cyber-criminals are using fake e-mails to target Facebook users and deliver computer viruses that were being detected only by one-third of the 42 most common anti-virus products.

  17. Inder Rathore

    Aha! nice plugins and article. :)

  18. Hank

    Hey Matt,
    Great tips from this post and I really like the plugins. Keep it coming.

  19. Nexus IT Support & Repair

    Great work

    Some real good ideas that im happily taking advantage of now.

  20. Saikrishna

    Great…. Thanks for sharing this tools.So happy :)

More Articles You Might Like

Enter Your Email Here to Get Access for Free:

Go check your email!