Markify is a free, cross-platform Markdown editor for Windows, macOS and Linux. It's built to be genuinely lightweight, under 10MB, while still covering the essentials: a folder explorer, live preview, PDF export, dark/light themes, and support for 4 languages. Made for people who just want to open a note and start writing, without waiting on a heavy app to load. Open source, AGPL-3.0.