• Option1: GPL license. GPL license is a free license for open source websites. This license can be used when all the content on your website is open source.
  • Option 2: Commercial license. A commercial license gives you the right to use the DHTML Chess software without the restrictions given by the licenses above. Commercial licenses also comes with e-mail support and installation on your web server.

Purchase a commercial license

Before purchasing a commercial license, please make sure that your site supports PHP 5.3 (or newer).

A commercial license can be purchased using the form below


If you have any questions about the license, please send an email to