Zettlr is an open-source markdown editor designed for academic writing, note-taking, and research management. It processes files locally and runs on Windows, macOS, and Linux.

Zettlr offers comprehensive academic writing capabilities with robust markdown editing, citation management, and research organization features. While its academic-focused interface and citation system require initial learning investment, the powerful search, export options, and Zettelkasten implementation make it valuable for serious research work. It's particularly well-suited for journalists, academics, researchers, and students who need to manage citations and complex writing projects while maintaining control over their data.