Bludit - Bludit is a web application to build your own website or blog in seconds, it's completely free and open source. Markdown support.
AdZis - AI Content Engine for E-Commerce/E-Business Websites.
Grav - The modern open source flat-file CMS
Constant Content - Constant Content is a content creation platform that allows you to create beautifully designed, high-quality, and unique content for business.
BaferCMS - The fastest and the easiest way to edit content "in-place", while looking at the website.
Contenteum.io - Create Content That Ranks. At Scale.