▶ True WYSIWYG editing with an inline formatting toolbar

▶ Side-by-side Markdown source and live preview with a draggable divider

▶ Light/Dark theme

▶ Internal anchor links that navigate within the document, with back/forward history

▶ Automatic conversion of a pasted heading title into the correct #anchor link

▶ Recent files list, unsaved-changes protection, and Windows file association support 

Windows only. It is free.