Discourse

Discourse is a forum software designed for building online communities. While it offers robust features for discussion, moderation, and community management, it doesn't align perfectly with the 'online publishing platform' aspect of Medium. Specifically, it lacks a clear 'distribution & recommendation engine' for surfacing content to a broad audience beyond the community itself, and its monetization features are geared towards community subscriptions rather than writer-centric revenue based on reading time. However, it does provide a rich text editor, community feedback tools, user profiles, tags, email integration, mobile access, social sharing, and search capabilities.