Editor.js is a block-styled editor for rich media stories. It outputs clean data in JSON instead of heavy HTML-markup. And more important thing is that Editor.js is designed to be API extendable and pluggable.
Russia
Markie is a wysiwyg editor for the markdown syntax written entirely in python with html preview of your own css.
NicEdit is a free inline wysiwg html editor you can easily add to your site in seconds! NicEdit is a Lightweight, Cross Platform, Inline Content Editor to allow easy editing of web site content on the fly in the browser.
United States
Markdown is a simple syntax built for writers who want to compose in an easy-to-write, easy-to-read format that can be converted to HTML. But the missing component up until now has been quickly uploading that HTML to a URL that can be easily shared with others.
An independent web app that converts PDFs, Office files, images, and public webpages into structured Markdown for AI workflows.
The MarkItDown library is a utility tool for converting various files to Markdown (e.g., for indexing, text analysis, etc.).
iWriter Pro is elegant and minimalist text editor with built-in Markdown support. Distraction-free and subscription-free.
Poland
EU
React Rich Text Editor is a UI component built completely in React that is meant to be a full-featured textarea replacement. It's based on the excellent, open source Draft.js from Facebook which is performant and production-tested.
Cyprus
