Web development involves creating websites, web applications and other online properties using a combination of various technologies and tools. These typically include frontend languages and libraries such as HTML, CSS, and JavaScript, and backend programming languages such as PHP, Python, or Ruby. Popular frameworks like Angular, React, and Vue.js are used to streamline and enhance the development process. Additionally, web developers may work with content management systems like WordPress, Drupal, or Joomla, as well as databases like MySQL, MongoDB, or PostgreSQL.