Textile is a project mainly written in Arc, it's free.
Textile for Arc.
h1. Textile for Arc
This is a (currently imcomplete) implementation of Textile in Arc. The goal is to provide a more complete implementation of Textile than pg's implementation of Markdown. Despite its incompleteness, it is already a workable language for simple documents.
h2. Changelog
h3. Version 0.1
Initial release. Supports blocks with attributes for class, style, and lang, but not id, and all the spans without attributes.