Brett Terpstra

Free
Manage folders of plain text files with lists of apps and commands to launch.
Free
Show a preview of the destination for a URL in the text you’re working on.
Free
The Markdown Service Tools make creating Markdown-formatted text easier, with UTF-8 character compatibility.
Free
An OS X System Service to add titles and affiliate tokens to URLs (Markdown format) in selected text
Free
It is a utility for previewing compiled Scrivener documents live in Marked.
Free
Paste in a URL, and the app will find the core text of the page.
Free
Marked 2 is a previewer for text markup languages.
Free
Notational Velocity fork with MultiMarkdown support.
Free
Mac app for creating PopClip extensions.
Free
Preview Markdown files, review and export personal documents.
Free
StretchLink expands shortened URLs in text copied on Macs.