I use Atom editor as much as is possible in all my operating system (Linux, OS X and Windows).
There is list of my favorites plugins.
- atom-beautify
Beautify HTML, CSS, JavaScript, PHP, Python, Ruby, Java, C, C++, C#, Objective-C, CoffeeScript, TypeScript, Coldfusion, and SQL in Atom
https://atom.io/packages/atom-beautify - language-markdown
Adds grammar support for Markdown (including Github flavored, AtomDoc, Markdown Extra, CriticMark, YAML/TOML front-matter, and R Markdown), and smart context-aware behavior to lists, and keyboard shortcuts for inline emphasis.
https://atom.io/packages/language-markdown - markdown-preview-plus
Markdown Preview + Community Features
https://atom.io/packages/markdown-preview-plus