Hashnode

Hashnode is a strong match for the online publishing platform concept. It offers a 'Block-based WYSIWYG Markdown editor' which covers the rich text editor. The pricing page clearly outlines 'Free plan', 'Startup' and 'Enterprise' plans, indicating membership monetization. While not explicitly called 'reader engagement metrics', the site mentions 'Built-in Analytics' and 'Advanced analytics' for blogs and docs, which would provide similar insights. The platform supports 'In-line commenting' and 'User feedback feature' for community feedback. Hashnode allows for 'Publication Management' through its team collaboration features and the ability to 'Create, collaborate, and scale your blogs and docs'. User profiles are implied through the 'Registered users' metric and the ability to follow authors. The platform uses 'custom tags and categories' for content organization. It also offers an 'Integrated newsletter experience'. Although a dedicated mobile app isn't explicitly highlighted, the platform is designed for web access. Social sharing is implied by the nature of a blogging platform, and 'Dynamic webhooks for real-time actions' could facilitate this. 'AI-powered search and chat' and 'Super fast search powered by Algolia' cover search and discovery. The 'My feed' and 'Top AI Tools Directory' sections suggest a form of content distribution and recommendation, though not as explicitly detailed as Medium's algorithmic feed.