HubSpot's Pro or enterprise CMS is an excellent tool for the savvy, conversion-focused marketing and sales leaders. Whilst this is a premium CMS with a monthly subscription fee, its inbuilt features really negate the cost once you add up the features like 3rd party add-ons to a free CMS.
PHPmaker - PHPMaker is a powerful automation tool that can generate a full set of PHP quickly from MySQL, PostgreSQL, Oracle, Microsoft Access, Microsoft SQL Server and SQLite databases.
WordPress - WordPress is web software you can use to create a beautiful website or blog. We like to say that WordPress is both free and priceless at the same time.
AdminLTE - Web-based admin dashboard & control panel template. Highly customizable and easy to use.
Craft CMS - Content management system built on Yii PHP Framework
P4A - Php For Applications - PHP5 RAD Framework based on Zend Framework.
Drupal - Drupal - the leading open-source CMS for ambitious digital experiences that reach your audience across multiple channels. Because we all have different needs, Drupal allows you to create a unique space in a world of cookie-cutter solutions.