Hackmd.io Review, Pricing & Features

HackMD is a real-time collaborative Markdown editor for teams, with GitHub sync and an agent-friendly API. Free plan available; Prime from $5/month.

Category
Project Management
Pricing
Freemium, from Free (Prime plan from $5/month)
Verified
Not yet
Last updated
July 20, 2026
Founded
2015
Headquarters
Taipei, Taiwan
Free PlanAPIAIFreemium

What Is HackMD?

HackMD is a collaborative note-taking and documentation tool built around Markdown. Multiple people can edit the same note simultaneously, see each other's cursors, leave comments, and track changes through version history, similar to how Google Docs works but for Markdown-formatted content.

Founded in 2015 and headquartered in Taipei, Taiwan, HackMD has grown to more than 1 million users across 30,000 teams in 170 countries, and is used by organizations including Ethereum and Avalanche for public and internal documentation.

Key Features

HackMD integrates with GitHub so notes can be synced with a repository, and supports public notes, shared team workspaces, embeds, and a slide presentation mode built directly from Markdown content.

The platform has added an agent-friendly API and CLI that let AI agents pull notes as plain Markdown and push back drafts, code, or research, while access controls keep humans in charge of publishing and production changes. HackMD notes that Markdown uses up to 80% fewer tokens than equivalent HTML, making it a more efficient format for AI agents to work with.

HackMD Pricing

HackMD offers a free plan that allows unlimited notes and up to 3 teammates, making it usable for individuals and very small teams without payment.

The Prime plan costs $5 per month for a personal workspace, or $5 per person per month for a Prime Team workspace with more collaborators. An Enterprise plan adds SSO, GitLab integration, and on-premises or managed hosting, priced on request for larger organizations.

Key Features

Pros & Cons

Pros

  • Free plan supports unlimited notes and small-team collaboration
  • Fast, lightweight editor focused on Markdown rather than a heavier document format
  • Real-time multi-cursor editing works well for teams writing together live
  • Built specifically to support AI agents reading and writing alongside humans
  • GitHub sync keeps documentation close to code for engineering teams

Cons

  • Free plan caps teams at 3 teammates, requiring a paid plan for larger groups
  • Markdown-only format may not suit teams that need rich WYSIWYG document editing
  • Enterprise features like SSO and self-hosting require custom pricing
  • Less suited to non-technical teams unfamiliar with Markdown syntax

Pricing

Frequently Asked Questions

Is HackMD free?

Yes, HackMD has a free plan with unlimited notes and up to 3 teammates. Paid Prime plans start at $5/month for more collaborators and features.

Where is HackMD based?

HackMD was founded in 2015 and is headquartered in Taipei, Taiwan.

Can HackMD sync with GitHub?

Yes, HackMD can sync notes with GitHub repositories to keep documentation aligned with source code.

Does HackMD support AI agents?

Yes, HackMD provides an agent-friendly API and CLI so AI agents can read notes as Markdown and contribute drafts or content, while humans retain control over publishing.

What's included in HackMD's Enterprise plan?

The Enterprise plan adds SSO, GitLab integration, and on-premises or managed hosting options, with pricing quoted directly by HackMD.

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