The figure below shows the backend programming languages used by large websites.

1、Google.com

  • Front-end: JavaScript
  • Backend: C, C++, Go, Java, Python
  • Database: BigTable, MariaDB
 

2、YouTube.com

  • Frontend: JavaScript
  • Database: BigTable, MariaDB

3、Facebook.com

  • Front-end: JavaScript
  • Backend: Hack, PHP (HHVM), Python, C++, Java, Erlang, D, Xhp, Haskell
  • Database: MySQL, HBase Cassandra

4、Yahoo

  • Front-end: JavaScript
  • Backend: JavaScript, PHP
  • Database: MySQL, PostgreSQL

5. Amazon.com (Amazon)

  • Frontend: JavaScript
  • Backend: Java, C++, Perl
  • Database: Oracle

6. Wikipedia.org (Wikipedia)

  • Frontend: JavaScript
  • Backend: PHP, Hack
  • Database: MySQL, MariaDB

7、Twitter.com

  • Frontend: JavaScript
  • Backend: C++, Java, Scala, Ruby on Rails
  • Database: MySQL

8. Bing

  • Frontend: JavaScript
  • Backend: ASP.NET
  • Database: Microsoft SQL Server

9、eBay.com

  • Frontend: JavaScript
  • Backend: Java, JavaScript
  • Database: Oracle

10、MSN

  • Front-end: JavaScript
  • Backend: ASP.NET
  • Database: Microsoft SQL Server

11、Microsoft

  • Frontend: JavaScript
  • Backend: ASP.NET
  • Database: Microsoft SQL Server

12、Linkedin.com

  • Frontend: JavaScript
  • Backend: Java, JavaScript, Scala
  • Database: Voldemort

13、Pinterest

  • Frontend: JavaScript
  • Backend: Django (Python framework), Erlang
  • Database: MySQL, Redis

14、WordPress.com

  • Frontend: JavaScript
  • Backend: PHP, JavaScript (Node.js)
  • Database: MySQL