Quarkdown: Turing-complete Markdown typesetting system
Summary
Quarkdown extends Markdown with a Turing-complete scripting layer and a standard library, enabling functions, variables and dynamic content in a single source that can be compiled to HTML, PDF, Markdown, or plain text. It emphasizes live preview, fast compilation, editor support, and multi-target outputs for books, papers, knowledge bases, and presentations. The project is open source under GPL/AGPL licenses and provides installation and quickstart guidance.