WordPress
Freemium
WordPress is an open source content management solution based on PHP maintained by Automattic which is also being offered as hosted solution.
Blogger
Freemium
Blogger is a blog-publishing service that allows multi-user blogs with time-stamped entries.
Write.as
Free
Write.as is a focused publishing platform.
Tumblr
Free
Tumblr is a microblogging and social networking website.
Origami Engine
Commercial
Origami Engine is an Mobile App publishing platform that lets you create exciting interactive publications, apps, and documents without a single line of code.
Compare Medium with alternatives
Compare Origami Engine and Medium and decide which is most suitable for you.