Markdown is a text-to-HTML conversion tool for web writers. Markdown allows you to write using an easy-to-read, easy-to-write plain text format, then convert it to structurally valid XHTML (or HTML).
License: Open Source
Markdown is known for its simplicity and ease of use, making it ideal for quick formatting tasks. In contrast, Textile offers more advanced features and customization options, making it suitable for complex documents but with a steeper learning curve.