Programming languages used in most popular websites

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The most popular (i.e., the most visited) websites have in common that they are dynamic websites. Their development typically involves server side coding, client side coding and database technology. The programming languages applied to deliver similar dynamic web content however vary vastly between sites.

Programming languages used in most popular websites*

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	C, C++, Go,[3] Java, Python	BigTable,[4] MariaDB[5]	The most used search engine in the world
Facebook.com	1,100,000,000	JavaScript	Hack, PHP (HHVM), Python, C++, Java, Erlang, D,[6] Xhp,[7] Haskell[8]	MariaDB, MySQL,[9] HBase Cassandra[10]	The most visited social networking site
YouTube.com	1,100,000,000	JavaScript	C, C++, Python, Java,[11] Go[12]	Vitess, BigTable, MariaDB[5][13]	The most visited video sharing site
Yahoo	750,000,000	JavaScript	PHP	MySQL, PostgreSQL[14]	Yahoo is presently[when?] transitioning to Node.js[15]
Amazon.com	500,000,000	JavaScript	Java, C++, Perl[16]	Oracle Database[17]	Popular internet shopping site
Wikipedia.org	475,000,000	JavaScript	PHP, Hack	MySQL[citation needed], MariaDB[18]	"MediaWiki" is programmed in PHP, runs on HHVM; free online encyclopedia
Twitter.com	290,000,000	JavaScript	C++, Java, Scala, Ruby on Rails[19]	MySQL[20]	140 characters social network
Bing	285,000,000	JavaScript	ASP.NET	Microsoft SQL Server
eBay.com	285,000,000	JavaScript	Java,[21] JavaScript,[22] Scala[23]	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	Java, JavaScript,[24] Scala	Voldemort[25]	World's largest professional network
Pinterest	250,000,000	JavaScript	Django (a Python framework),[26] Erlang	MySQL, Redis [27]
WordPress.com	240,000,000	JavaScript	PHP, JavaScript [28] (Node.js)	MariaDB, MySql

*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	Yes	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