Patreon

Patreon is a strong match for the concept of an online publishing platform focused on creator monetization and community. It offers a rich text editor for content creation, a robust membership and monetization model, and tools for community engagement like comments and DMs. While it doesn't explicitly have a 'recommendation engine' in the same vein as Medium, it does offer 'creator-first discovery' and tools to 'expand your reach' which serve a similar purpose of content distribution. It also provides analytics for creators, user profiles, tagging, email newsletter integration, and mobile app access.