When comparing Macchiato vs MultiMarkdown Composer, the Slant community recommends MultiMarkdown Composer for most people. In the question“What are the best Markdown editors for OS X?” MultiMarkdown Composer is ranked 12th while Macchiato is ranked 31st. The most important reason people chose MultiMarkdown Composer is:
Not many popular Markdown editors support MultiMarkdown syntax.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Does not distract the user
Macchiato does not get in the way. It has a minimalist UI that highlights Markdown syntax.
Pro Support for latest Mac OSX features
Macchiato supports Mac OSX features like fullscreen mode, auto-save and version history.
Pro Multimarkdown support
Not many popular Markdown editors support MultiMarkdown syntax.
Pro Multiple export options
You can export to HTML, PDF, LaTeX, RTF, OpenOffice, Microsoft Word, ePub, OPML.
Pro Table of Contents support
Generates a table of contents based on the headers in the Markdown file being worked on.
Pro Support for elastic tabstops
Elastic tabstops are used to align text automatically during writing. When there's a change in the text, MultiMarkdown Composer automatically aligns all lines both on the beginning and end of them.
Pro CriticMarkup support

Pro Optional synchronized scrolling
Hold a key down and get synchronized scrolling.
Pro Fast syntax highlighting
Pro Highly customizable
Pro Counts words, characters, lines
Pro Can show invisible characters
Cons
Con Software is somewhat expensive and there's no trial version to test it out
Macchiato costs $19.99 and offers no way of testing the software before buying.

Con Table of contents gets out of sync sometimes
If you keep the auto-generated table of contents open while you work it gets out of sync, meaning items in the table of contents (at the end) disappear until you restart the program.
Con The way the preview shows images is inconsistent
The preview is a bit inconsistent with images. Sometimes it shows the image correctly, sometimes it shows a blue question mark.
