Read the Docs

Automated documentation hosting that builds and serves Sphinx and MkDocs projects directly from version control.

Read the Docs streamlines technical writing by automating the build and deployment process for over 100,000 open source projects. It connects to repositories on GitHub, GitLab, or Bitbucket to trigger fresh builds whenever you push code. The platform manages versioning (tracking stable, latest, and specific releases) and provides built-in search functionality across all pages. It supports standard formats like Sphinx and MkDocs to generate clean HTML, PDF, and ePub outputs. Teams rely on it for hosting documentation at scale: it handles custom domains, automated SSL certificates, and serves millions of pageviews daily.

https://readthedocs.org