Microsoft WebMatrix is a discontinued cloud-connected website builder and HTML editor for Windows, geared towards web development.

[3][4] WebMatrix enables developers to build websites using built-in templates or popular open-source applications, with full support for ASP.NET, PHP, Node.js and HTML5.

In 2011, WebMatrix was released to support the large number of open source content management systems and to provide a lightweight web development environment for PHP and the new, simplified ASP.NET web pages.

It focused on a clean, simple user interface allowing web developers to build websites from scratch or by customizing open-source web content management systems such as Orchard, DotNetNuke, Umbraco, Joomla!, Drupal and WordPress.

[1] In 2016, Microsoft announced the discontinuation of WebMatrix in favour of Visual Studio Code with formal support ending on November 1, 2017.