remarkable

ghostwriter is GUI markdown editor with spell check support.

Installation

Check https://remarkableapp.github.io/linux/download.html to get last version

cd ~/Downloads/ &&
sudo apt update &&
sudo apt install python3-markdown &&
wget https://remarkableapp.github.io/files/remarkable_1.87_all.deb &&
sudo dpkg -i remarkable_1.87_all.deb &&
cd -

Fix installation issues

sudo apt install python3-markdown # if  missing
sudo apt-get --fix-broken install

Install optional spell check support

To install spell check

sudo apt install python3-gtkspellcheck

Remove/uninstall remarkable

Just do

sudo apt remove remarkable