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.
Ghost - Ghost is a fully open source, adaptable platform for building and running a modern online publication. We power blogs, magazines and journalists from Zappos to Sky News.
Craft CMS - Content management system built on Yii PHP 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.
Bolt - Bolt is an open source Content Management Tool, which strives to be as simple and straightforward as possible. It is quick to set up, easy to configure, …
DEV.to - Where software engineers connect, build their resumes, and grow.