Hack vs Markdown: What are the differences?
Hack: A programming language for HHVM that interoperates seamlessly with PHP. Hack provides instantaneous type checking via a local server that watches the filesystem. It typically runs in less than 200 milliseconds, making it easy to integrate into your development workflow without introducing a noticeable delay; Markdown: Text-to-HTML conversion tool/syntax for web writers, by John Gruber. Markdown is two things: (1) a plain text formatting syntax; and (2) a software tool, written in Perl, that converts the plain text formatting to HTML.
Hack and Markdown can be categorized as "Languages" tools.
"Interoperates seamlessly with php" is the top reason why over 5 developers like Hack, while over 345 developers mention "Easy formatting" as the leading cause for choosing Markdown.
According to the StackShare community, Markdown has a broader approval, being mentioned in 756 company stacks & 718 developers stacks; compared to Hack, which is listed in 8 company stacks and 3 developer stacks.