Zettlr

Zettlr offers a free, open-source solution for editing Markdown files across Windows, macOS, and Linux. Developed with Electron, it ensures a consistent and native-feeling experience on any operating system. The editor is built to handle everything from quick notes to large writing projects, featuring a split-screen live preview, folder management, and support for mathematical typesetting. Its commitment to open-source principles means continuous improvement driven by its community, providing a reliable and ethical alternative to proprietary writing software.