MARCH 06, 2020


The internet is filled with billions of websites. In fact, as of January 2020, there are over 1.74 billion websites on the internet. However, there are a few that most of us access on a regular basis. These include websites like Google, Facebook, Amazon, YouTube, and more. But have you ever wondered what programming languages these websites use?



Google is the most used search engine in the world with approximately 1.17 billion people using the search engine. They process an average of over 40,000 search queries per second, totaling about 3.5 billion searches in a day and 1.2 trillion searches in a year.

  • Front End: JavaScript, TypeScript
  • Back End: C, C++, Go, Java, Python
  • Database: Bigtable, MariaDB



Facebook is the most used social networking site with almost 2.5 billion monthly active users as of quarter 4 of 2019. It is used to connect to people, share thoughts and experiences, play games, and more. It is also highly used by businesses for their marketing and advertising strategies.

  • Front End: JavaScript
  • Back End: Hack, PHP (HHVM), Python, C++, Java, Erlang, D, XHP, Haskell
  • Database: Vitess, Bigtable, Maria DB



LinkedIn is the world’s largest professional network. According to Business Insider, LinkedIn passed the half-billion user mark 3 years ago in 2017. They have 260 million monthly active users with 40% of those active users accessing it daily.

  • Front End: JavaScript
  • Back End: Java, JavaScript, Scala
  • Database: Voldemort



Twitter is another popular social network with about 330 million monthly active users and 145 million daily active users, according to Oberlo.

  • Front End: JavaScript
  • Back End: C++, Java, Scala, Ruby
  • Database: MySQL 


Need ideas? Pinterest is the place to go. They currently have 322 million monthly active users with over 200 billion pins saved.

  • Front End: JavaScript
  • Back End: Python (Django), Erlang
  • Database: MySQL, Redis



YouTube is a popular video-sharing site with 2 billion monthly users. It is Google’s most popular service with more users than Gmail.

  • Front End: JavaScript
  • Back End: C, C++, Python, Java, Go
  • Database: Vitess, BigTable, MariaDB



Amazon has gained popularity over the past few years, with about 206 million users visiting the shopping site every month, browsing through their catalogue of over 12 million products.

  • Front End: JavaScript
  • Back End: Java, C++, Perl
  • Database: PostgreSQL, RDS, RDS Aurora



eBay is an online auction house or marketplace where sellers can market and sell their goods to people interested in buying. As of 2019, there are over 182 million eBay users worldwide with over 1.3 billion listings on the website.

  • Front End: JavaScript
  • Back End: Java, JavaScript, Scala
  • Database: Oracle



If you are considering becoming a Front End developer, it’s safe to say that JavaScript should be on the top of your list of things to learn and to master. For Back End programming languages, Java still tops the list since it is used by Google, Youtube, Facebook, Amazon, Twitter, eBay, LinkedIn, and even Yahoo.



MARCH 06, 2020