When comparing Smartdown vs P4 Editor, the Slant community recommends Smartdown for most people. In the question“What are the best open source Markdown editors for UNIX-like systems?” Smartdown is ranked 33rd while P4 Editor is ranked 35th. The most important reason people chose Smartdown is:
You can add directories to the sidebar. These directories can be from cloud services (like Dropbox for example).
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Integrated file library
You can add directories to the sidebar. These directories can be from cloud services (like Dropbox for example).
Pro Advanced Markdown support
Smartdown supports Critic Markup and MultiMarkdown flavors of Markdown that add advanced functionality, like tables, footnotes, etc.
Pro Customizable
The app can be themed and the layout can be changed around.
Pro Easiest way to write online
Pro Feature-rich
P4 is a free online Markdown editor with features such as live preview, auto save, and spell checker.
Cons
Con Not Free
Smartdown costs $19.99.