Discord | Markdown Guide
Discord is a popular free messaging and team collaboration application.
Markdown throwdown: what happens when FOSS software gets corporate backing?
CommonMark fork could end up better for users... but original creators seem to disagree.
GitHub Flavored Markdown Spec
GitHub Flavored Markdown, often shortened as GFM, is the dialect of Markdown that is currently supported for user content on GitHub.com and GitHub Enterprise.