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Web server backend of known online portals (Updated weekly)

This is a growing list of known online portals and the technology used to power them on the back-end. We are using several investigative methods, technical and non-technical, to come up with an educated answer or guess as to what lies behind the scenes for these portals. Keep in mind that these systems are most likely clustered as opposed to a standalone dedicated server.

We list the Web server, server-side engine or accelerator, and CDN. Don’t forget to check back often as we update this list daily.

Google.com

Web Server: GWS
Server-side: C++ / Python / Java
CDN: N/A

WordPress.com

Web Server: Nginx
Server-side: PHP / Varnish
CDN: Custom built w/ Varnish Cache

Reddit.com

Web Server: Unknown
Server-side: WSGI w/Python
CDN: Akamai

Digg.com

Web Server: Apache
Server-side: PHP 5 w/ Digg modifications
CDN: Contendo CDN

Yahoo.com

Web Server: YTS 1.18 Proxy
Server-side: C/C++ / PHP
CDN: N/A

Fiverr.com

Web Server: Apache 2.2.x on Ubuntu
Server-side: Phusion Passenger (mod_rails/mod_rack) 2.2.15
CDN: N/A

Blackberry.com

Web Server: Apache 2.0.x
Server-side: Tomcat / JBoss
CDN: Akamai

Paypal.com

Web Server: Apache and thttpd
Server-side: Java and C++
CDN: N/A

News.ycombinator.com

Web Server: Apache 2.2.x on Ubuntu
Server-side: Arc
CDN: N/A

Flickr.com

Web Server: Apache 2.0.x
Server-side: PHP and Varnish Cache
CDN: N/A

Wikipedia.com

Web Server: Apache
Server-side: PHP w/ Varnish Cache
CDN: N/A

Myspace.com

Web Server: Microsoft IIS
Server-side: Cold Fusion Markup
CDN: Akamai

Intel.com

Web Server: Microsoft IIS 6.0
Server-side: Java Server Pages
CDN: N/A

Youtube.com

Web Server: Apache
Server-side: Python
CDN: Akamai

Craigslist.org

Web Server: Apache
Server-side: Python
CDN: Akamai

Ask.com

Web Server: Apache 2.2.x
Server-side: Unknown
CDN: Akamai

CIA.gov

Web Server: Apache 2.2.x
Server-side: Jetspeed / Java (EIP)
CDN: N/A

Adobe.com

Web Server: Apache
Server-side: Cold Fusion Markup
CDN: Akamai

Ebay.com

Web Server: Apache Tomcat / IIS
Server-side: Java
CDN:N/A

Twitter.com

Web Server: Apache
Server-side: Scala JVM / Ruby / Varnish
CDN: N/A

Bankofamerica.com

Web Server: Sun One Web Server
Server-side: Java with BigIP LB
CDN: N/A

NASA.gov

Web Server: Apache
Server-side: PHP (Joomla)
CDN: Akamai

Oracle.com

Web Server: Oracle-Application-Server Oracle-Web-Cache
Server-side: Java Server Pages
CDN: Akamai w/ BigIP

Technorati.com

Web Server: Apache
Server-side: PHP
CDN: Edgecast CDN (Varnish Cache)

IBM.com

Web Server: IBM_HTTP_Server (Apache based)
Server-side: FastCGI
CDN: N/A

AMD.com

Web Server: Microsoft IIS/6
Server-side: ASP.NET
CDN: Akamai

FBI.gov

Web Server: Apache 2.2.x
Server-side: Python (Plone CMS)
CDN: Akamai

SANS.org

Web Server: Apache
Server-side: PHP
CDN: N/A

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