We ( https://emergence-engineering.com/ ) are a consulting company that tries to develop it's own products. Rich text editors, especially ProseMirror, is our main direction, and boom, here we're with SuggestCat.
It's similar to what notion does, but it can also do grammar & stylistic correction like Grammarly.
We have a ton of ideas on how to go further with it, but we need some real feedback.
The example worked at expected here, except correcting swiming loses the subsequent blank line, and tapping the SuggestCat highlight gives the swiming tip.