What language does Google and others use?

Question

What language / framework does google do and others like MSN, yahoo, orkut, facebook, twiiter etc. Or actually any popular site.

I know the following

• Facebook - PHP
• Yahoo - PHP
• Gmail - Java
• Twitter - ROR and Scala
• Foursquare - Scala

What about others

EDIT:

Google employees are officially allowed to use 4 languages: Python, Java, C ++, JavaScript. this does not mean that they cannot use other languages.

Answer 1

Google Search - Python ( http://python.about.com/b/2006/11/17/creative-search-technology-with-python.htm )

The Google Wave Protocol - Java ( http://code.google.com/p/wave-protocol/ (you can check this out and examine it, a total of 40,000 lines;)))

Google Wave Front-End - Google Web Toolkit ( http://code.google.com/webtoolkit/doc/1.6/examples/ )

Google Moderator Frontend - Google Web Toolkit ( http://code.google.com/webtoolkit/doc/1.6/examples/ )

Google Maps Appearance - JavaScript ( What language is used in google maps interface? )

Gmail Frontend - JavaScript ( http://en.wikipedia.org/wiki/Gmail#Code_changes )

Answer 2

Google really uses various technologies / languages ​​for its purposes.

For example, Python

"Python has been an important part of Google from the very beginning and remains so that the system grows and develops. Today, dozens of Google engineers use Python, and we are looking for more people with skills in this language." said Peter Norvig, director of search quality at Google, Inc.

(quote taken from python.org )

In their help page, you can see the ".py" file extensions in the browser address bar;) Maybe also use it for your search pages?

I'm sure things like their Google File System> are written in C or C ++.

The GMail and Google Maps (afaik) interfaces are created using Java and the Google Web Toolkit .

In conclusion: there is no definite answer to your questions, since Google really includes many different technologies for various problems ...