HackMD

HackMD is a collaborative real-time Markdown editor designed for teams, communities, and projects to write, refine, and manage technical documentation and notes. It enables seamless collaboration via live multi-cursor editing, comments, version history, and integration with GitHub. Built for both human teams and AI agents, HackMD provides shared workspaces, public notes, slide modes, and APIs for agent integration—enabling agents to both consume and contribute knowledge in Markdown form efficiently.