markitdown

Open source alternative to LangGraph Platform (now LangSmith Deployments) - Self-hosted AI agent backend with FastAPI and PostgreSQL. Zero vendor lock-in, full control over your agent infrastructure.

A flexible agent harness built on LangChain and LangGraph that integrates planning tools with a filesystem backend. It supports the execution of complex agentic tasks and the spawning of autonomous subagents.

Easily create clean and visually appealing documentation from Markdown files without unnecessary complexity. It is designed for developers who want a straightforward solution to generate fast and efficient documentation.

Render markdown into email-safe HTML

花笺，轻量优雅的跨平台桌面便签工具，支持 Markdown 编辑与预览

Agent Lattice: a knowledge graph for your codebase, written in markdown.