Since this project is not really active, if you are looking for a modern take on fully local WYSIWYG note taking where you own the files, I highly recommend checking out my project https://bangle.io.

- It is fully local web app .. no servers no data hoarding.

- No proprietary format, it saves your notes in markdown in your computer.

- It is WYSIWYG editor so that you don't have to switch context.