vfmd Markdownr is a simple website for trying out the vfmd Markdown parser.
vfmd Markdownr is a fork of Markdownr.com by Sam Soff.es. The original Markdownr.com uses Redcarpet to parse markdown input, while vfmd Markdownr uses (what else) vfmd.
The server code is written in Ruby, and the vfmd parser is written in C++, with the interfacing managed through SWIG. Whenever the text changes, the text is sent to the server and the result is fetched and displayed.