YMarkdownG Okazaki-Yumemi

YMarkdownG is a desktop Markdown editor for Windows, macOS and Linux. It offers what-you-see-is-you-get, source, split preview and reading modes, with code highlighting, LaTeX math, pasted images, PDF export, themes, custom backgrounds and transparency. It opens local .md files directly. There is no note library, folder collection or directory management; reopening a file reuses the existing window, and unsaved changes are asked about before a file is switched or the app closes.