Marked opens MultiMarkdown, Markdown, Text or HTML files and previews them as HTML documents. It watches the file for changes, updating the preview any time the file is saved. With a full set of preview styles, Marked adds an ideal “live” Markdown preview to any text editor. Plus… copy HTML with a keystroke, save to PDF or Print, or export to HTML in seconds.
Those that know me know that, with the exception of a quick note or two, I write almost everything in Markdown using TextEdit on the Mac.
This is a godsend.