pandoc. Useful for large and complex directory of documents to process through pandoc. *Note: Author now recommends pandoc-seed-project.
\stopmarkdowndirectly in ConTeXt.
Rippledoc processes .md files into html. It ripples down from the current directory through nested subdirectories processing md files as it goes. It also generates tables of contents and navigation links, stitching together the documents into an easily-navigable whole.
SPAB a very simple windows GUI that uses Pandoc and a couple other open source tools to produce a .mobi, .epub, .doc, and .pdf ready for the most popular self-publishing services.
Pandoc Droplets and Services is a collection of simple and easily customizable Automator drag-and-drop applets and service menu items that use pandoc to produce pdf, docx, odt, and dzslides output on OS X.
Markdown menus, by Luke Maciak, provides contextual menus on Windows for creating PDFs and Word documents from markdown files. Double-click on the reg file to install.
PandocMarkdownTools is a small collection of scripts that creates a simple menu structure for conversion of Markdown docs using Pandoc. There are also scripts to simplify creation of Pandoc tables in Markdown and to automate replacement of document markers with the table text.
tpl4md by David Loureiro provides markdown templates for widely used documents such as simple pdf documents, complex pdf documents, letters, invoices, orders, or even slides. The goal is to be able to focus on the content that will be written in markdown. The remaining elements are handle by pandoc, latex etc.
pandoc-watch by David Loureiro is a simple watcher that call the pandoc command with the provided arguments when a file/folder modification is detected.
Uberdoc by Stephan Brosinski is a wrapper script for Pandoc which provides a build system to turn a number of markdown files (chapters) into large documents.
Xmindoc is a wrapper script for Pandoc which converts XMind mindmaps to any documents that are available in Pandoc.