HackMD
HackMD provides a real-time Markdown editor for collaborative work across teams, communities, and projects.
About HackMD
HackMD is a web-based Markdown workspace for real-time collaboration by teams, communities, and projects. It supports live editing with multiple cursors, comments and mentions, version history, templates, and GitHub sync.
Notes can be shared publicly for reading and forking, shown with embeds and slide mode, and retrieved as Markdown via REST API, CLI, or an Accept: text/markdown request for use with agents that draft, generate code, research, and document.
Key features
- Real-time Markdown editing with multiple cursors
- Comments and mentions on shared notes
- Version history tracking edits and revisions
- GitHub integration and sync
- Public notes that can be read and forked
- Retrieve notes as Markdown via REST API or CLI
Best for: Teams, communities, and projects that maintain shared Markdown notes and documentation together, including alongside agents.
Good for
- Real-time editing combined with comments, version history, and GitHub sync
- Notes stay in Markdown and are accessible via API, CLI, and standard URLs
- Public notes and shared workspaces support open reading and forking
HackMD at a glance
- Website
- hackmd.io
- Category
- Software & Utilities › Text Editors
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
Guides for Text Editors
HackMD alternatives
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HackMD FAQ
Can agents access HackMD notes?
Yes. Notes can be pulled as Markdown via REST API or CLI, including with an Accept: text/markdown request, and agent drafts can be pushed back into the workspace.
Can notes be shared publicly?
Yes. Public notes can be read and forked by others, with shared team workspaces for open work.
Does HackMD keep a history of changes?
Yes. Edits, comments, and revisions are tracked and recoverable through version history.
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