Remarkable is possibly the best Markdown editor you can find on Linux, it also works on Windows operating system. It is indeed a remarkable and fully featured Markdown editor that offers users some exciting features.

Some of its remarkable features include:
Supports live preview
Supports exporting to PDF and HTML
Also offers Github Markdown
Supports custom CSS
It also supports syntax highlighting
Offers keyboard shortcuts
Highly customizable plus and many more

github : https://github.com/jamiemcg/Remarkable