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PHP

We use PHP to develop server side applications.

Laravel.

An MVC Framework written in PHP

Drupal.

An CMS written in PHP

Symfony

Also, an MVC Framework written in PHP.

HTML / CSS

HTML and CSS are used to create the frontend of Web Applications.

JavaScript

JavaScripts is the language used in the browser side to create applications. But also, can be used in the backend.

React

A reactive framework written in Javascript.

Vue

Another reactive framework written in Javascript.