Websites Popularity
(unique visitors per month)[1]
Front-end
(Client-side)
Back-end
(Server-side)
Database Notes
Google.com[2] 1,600,000,000 JavaScript CC++GoJavaPython BigTable,[MariaDB The most used search engine in the world
Facebook.com 1,100,000,000 JavaScript HackPHP (HHVM)PythonC++Java,ErlangDXhpHaskell MariaDBMySQL,HBase Cassandra[ The most visited social networking site
YouTube.com 1,100,000,000 JavaScript CC++PythonJavaGo BigTable, MariaDB The most visited video sharing site
Yahoo 750,000,000 JavaScript PHP MySQL, PostgreSQL Yahoo is presently[when?] transitioning toNode.js[15]
Amazon.com 500,000,000 JavaScript JavaC++Perl Oracle Database Popular internet shopping site
Wikipedia.org 475,000,000 JavaScript PHPHack MySQL[citation needed],MariaDB "MediaWiki" is programmed in PHP, runs onHHVM; free online encyclopedia
Twitter.com 290,000,000 JavaScript C++JavaScalaRuby on Rails MySQL 140 characters social network
Bing 285,000,000 JavaScript ASP.NET Microsoft SQL Server  
eBay.com 285,000,000 JavaScript JavaJavaScript Oracle Database Online auction house
MSN.com 280,000,000 JavaScript ASP.NET Microsoft SQL Server An email client, for simple use. Mostly known as "messenger".
Microsoft 270,000,000 JavaScript ASP.NET Microsoft SQL Server Software company
Linkedin.com 260,000,000 JavaScript JavaJavaScript,Scala Voldemort World's largest professional network
Pinterest 250,000,000 JavaScript Django (a Python framework),Erlang MySQLRedis   
WordPress.com 240,000,000 JavaScript PHPJavaScript(Node.js) MariaDBMySql  

*data on programming languages are based on:

  • HTTP Header information
  • Request for file types
Back-end (Server-side) table in most popular websites
Websites ASP.NET C C++ D Erlang Go Hack Java JavaScript Perl PHP Python Ruby Scala Xhp
Google.com No Yes Yes No No Yes No Yes No No No Yes No No No
YouTube.com No Yes Yes No No Yes No Yes No No No Yes No No No
Facebook.com No No Yes Yes Yes No Yes Yes No No Yes Yes No No Yes
Yahoo No No No No No No No No Yes No Yes No No No No
Amazon.com No No Yes No No No No Yes No Yes No No No No No
Wikipedia.org No No No No No No No No No No Yes No No No No
Twitter.com No No Yes No No No No Yes No No No No Yes Yes No
Bing Yes No No No No No No No No No No No No No No
eBay.com No No No No No No No Yes Yes No No No No No No
MSN.com Yes No No No No No No No No No No No No No No
Microsoft                              
Linkedin.com No No No No No No No Yes Yes No No No No Yes No
Pinterest                       Yes      
Ask.com                              
WordPress.com No No No No No No No No Yes No Yes No No No No