Competitors
Canner Slate Editor
github.com
Canner Slate Editor is an open-source, modular, and extensible rich text/WYSIWYG editor built on the Slate framework. It provides a set of reusable npm modules for various editor features, allowing developers to customize and compose their own text editing experiences.
Rationale
The candidate, Canner Slate Editor, is explicitly described as a "Rich Text / WYSIWYG Editor built for Modularity and Extensibility." This directly matches the 'rich-text-editor' feature. However, the candidate is a component or library for building editors, not a full-fledged publishing platform with distribution, monetization, or community features like Medium. Therefore, only one feature matches.
How your capabilities compare with this competitor
See gridNo capabilities defined yet.