Markdown Parser GitHub Repositories (2026) · Open Source Tools

A jq-like Markdown query language for command-line processing

A bidirectional Markdown to HTML to Markdown converter written in Javascript

A fast, powerful, CommonMark compliant, extensible Markdown processor for .NET

A Python implementation of John Gruber’s Markdown with Extension support.

A framework for parsing and transforming Markdown written in Swift 6. The syntax is based on the CommonMark specification. The framework defines an abstract syntax for Markdown, provides parsers for parsing strings into abstract syntax trees, and comes with generators for HTML, attributed strings, plain text, and text with ANSI-markup.

📝 Markdown and HTML renderer for Svelte 5 — built for streaming AI agent output from Claude Code, ChatGPT, and agentic workflows. XSS-safe defaults, token caching, TypeScript types.