Open source docs-as-code projects
Every project in the registry tagged docs-as-code, ranked by real GitHub adoption.
Input OpenAPI. Output SDKs and Docs.
Cloud architecture diagrams in both directions: AI prompt or JSON to diagram, diagram to Terraform via MCP server, and Terraform to diagram via CLI or CI/CD. Us
Embrace a docs-as-code approach to build, version, and publish Git-driven documentation sites using Markdown and a visual editor
Frequently asked questions
How many open source docs-as-code projects are there?
This registry tracks 3 projects tagged docs-as-code, with 6,052 GitHub stars between them. The most-adopted is fern at 3,804 stars.
Are these docs-as-code projects free to use?
Yes — 3 of the 3 carry an explicit open-source licence across 3 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which docs-as-code project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these docs-as-code projects still maintained?
3 of the 3 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.