Web pages can be difficult to write for non-technical users. The myriad of content management systems (Drupal, Wordpress, Joomla) can help, but these systems need server-side support to work. In contrast, the BlueGriffon web content editor produces standards-compliant websites without server-side support. BlueGriffon provides an intuitive What You See Is What You Get interface. Behind the scenes, it uses the same HTML rendering engine as Firefox. BlueGriffon complies with W3C standards and can edit pages in HTML 4.01, HTML 5, XHTML 1.1 or XHTML 5 mode. Millions of users from institutions of all sizes use BlueGriffon. It is also the official recommended web authoring tool for the French government. Many commercial extensions for BlueGriffon are also available for purchase. These extensions add features like ePUB support, MathML editing, site templates, and more. BlueGriffon is available for Windows, macOS, and Linux.