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.

Sitecake - Drag and drop CMS for HTML websites. It's flat file CMS so it's pretty fast.

Sulu - Sulu is a content management platform based on Symfony, ideal for business websites and web-based software.

Anchor CMS - Free and lightweight blogging system

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.

Textpattern - Textpattern is an elegant content management system that is free, open source software.