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Read the Docs logo

Read the Docs

Documentation hosting with versioning built for open source

As of 29 August 2026, Read the Docs is free to use. Free documentation hosting for open source. Softwr lists it under Documentation. Read the Docs is available on Web.

Overview

What Read the Docs does

Read the Docs builds and hosts documentation, most commonly from Sphinx or MkDocs sources. It watches a repository, rebuilds on every commit, and serves versioned documentation keyed to branches and tags — so a project’s v2 and v3 docs coexist with no manual work. It hosts open-source projects free, which is why an enormous share of Python documentation lives there. The versioning and pull request previews are the parts teams miss when they self-host.

What people use it for

  • Open-source projects needing free hosted versioned documentation
  • Teams wanting docs rebuilt automatically on every commit
  • Reviewing documentation changes in a pull request before merge

The honest half

Where it falls short

Concrete and checkable, so you can decide whether any of them matter to you. This is the half of a review a vendor will not write about Read the Docs.

  • Build configuration is finicky, and build failures on dependency changes are a common frustration
  • Default themes are recognisable and dated, so sites look alike unless customised
  • Private documentation requires a paid business plan
  • Build times on large projects are slow enough to interrupt a review cycle

Cross-shopped

What people choose instead of Read the Docs

Each pairing was judged by two reviewers asking whether a buyer would genuinely weigh the two against each other. The ones that failed were deleted rather than published.

  • Read the Docs logo
    Read the Docs
    vs
    MkDocs logo
    MkDocs

    MkDocs: One of the generators it hosts; self-hosting removes the build platform but also its versioning

Pricing

What Read the Docs costs

Taken from the vendor's own pricing page. Prices move, so check before you buy.

Free

Free

  • Core functionality
  • Public projects

Capabilities

Features

  • Build on commit

    Documentation rebuilt automatically from the repository

  • Version by branch and tag

    Multiple documentation versions served side by side

  • Pull request previews

    Documentation changes reviewable before merge

  • Free for open source

    No cost for public projects

Answered, with sources

Questions people ask

Each answer names the page it came from, so you can check it rather than take our word for it.

Is Read the Docs free?

Free for open-source public projects. Private documentation requires a paid business plan.

What does it build from?

Most commonly Sphinx or MkDocs sources kept in your repository.

How does versioning work?

It maps branches and tags to documentation versions, so several releases are served side by side without manual work.

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Where to go from Read the Docs

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Softwr does not host reviews and shows no star rating for Read the Docs, because a rating we did not collect is not ours to publish. What is here is the pricing and platform detail from the vendor’s own pages, limitations we could state concretely, and alternatives a reviewer confirmed people weigh against it. Tell us if any of it is wrong.

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