GrapesJS is a multi-purpose, Web Builder Framework. It can be used to create web pages, Newsletters, Native Mobile Applications, Native Desktop Applications (eg. Vuido), PDFs (eg. React PDF), etc.
“Just” another medium clone built on top of DraftJs – in React
Just a react editor
A multi framework editor
Warning : not free. Cost minimum 144 dollars and up to 1800 / year.
Want some more – check this repo.