Markdown

• Markdown Guide
• CommonMark Spec

Parsers

• GitHub - markdown-it/markdown-it: Markdown parser, done right. 100% CommonMark support, extensions, syntax plugins & high speed

  • GitHub - markdown-it-rust/markdown-it: markdown-it js library rewritten in rust

• GitHub - github/cmark-gfm: GitHub’s fork of cmark, a CommonMark parsing and rendering library and program in C

• GitHub - syntax-tree/mdast: Markdown Abstract Syntax Tree format

  • GitHub - syntax-tree/mdast-util-from-markdown: mdast utility to parse markdown

Extended Syntax

• Obsidian Markdown Reference | Markdown Guide
• GitLab Flavored Markdown (GLFM) | GitLab Docs
• GitHub Flavored Markdown Spec
• Extended Syntax | Markdown Guide