marked
A markdown parser built for speed
markdown-it
Markdown-it - modern pluggable markdown parser.
micromark
small commonmark compliant markdown parser with positional info and concrete tokens
gray-matter
Parse front-matter from a string or file. Fast, reliable and easy to use. Parses YAML front matter by default, but also has support for YAML, JSON, TOML or Coffee Front-Matter, with options to set custom delimiters. Used by metalsmith, assemble, verb and