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Documentation · head to head

Doxygen vs Hasura

Doxygen logo

Doxygen

Documentation

Free, open source documentation generator that builds reference docs from source code comments

From
Free
Rated
-
Full reviewWebsite
Hasura logo

Hasura

APIs

GraphQL engine that instantly creates production-ready GraphQL API from databases

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Doxygen there is no vendor or paid support contract; when something breaks in a large or unusual codebase, the only recourse is community mailing lists, forums or reading the source; Hasura active model definition: model/command accessed more than 1,000 times monthly
  • They diverge on capability: Doxygen covers Code comment parsing, Hasura covers GraphQL API.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Doxygen and Hasura actually diverge.

Attributes where Doxygen and Hasura differ
AttributeDoxygenHasura
Pricing modelOpen source, no licence feefreemium
PlatformsLinux, macOS, WindowsWeb
CategoryDocumentationAPIs
FoundedUnknown2017

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Doxygen

  • Code comment parsing
  • Multi-format output
  • Call and inheritance graphs
  • Markdown support
  • CI-friendly build

Only in Hasura

  • GraphQL API
  • Real-time subscriptions
  • Access control
  • PostgreSQL
  • MySQL
  • Webhooks
  • REST APIs
  • Cloud support

What people use each for

The jobs each tool is most often brought in to do.

Doxygen

  • An engineering team generating API reference documentation directly from source code comments as part of a CI buildnot Hasura
  • A library or SDK maintainer who wants reference docs that cannot drift out of sync with the code because they are generated from itnot Hasura
  • An internal platform team documenting a large C++ or Java codebase where structure like class hierarchies and call graphs matters more than prosenot Hasura
  • A project with no documentation budget that still needs professional-looking reference output without any licence costnot Hasura

Hasura

  • Automatic GraphQL API generation from existing databasesnot Doxygen
  • Real-time data subscriptions for modern applicationsnot Doxygen
  • Backend infrastructure for web and mobile applicationsnot Doxygen
  • Event-triggered webhooks for database changesnot Doxygen

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Doxygen

  • There is no vendor or paid support contract; when something breaks in a large or unusual codebase, the only recourse is community mailing lists, forums or reading the source
  • Default HTML output looks dated and requires a third-party theme such as Doxygen Awesome to look acceptable to a modern audience, which is extra setup work not included
  • It only generates reference documentation from code comments; it is not a narrative documentation tool, help centre or CCMS, so most teams need a separate tool for guides and tutorials
  • Comment syntax and configuration have a real learning curve, and inconsistent comment discipline across a team produces inconsistent or sparse output regardless of the tool
  • Multi-language support varies in depth; parsing quality for languages outside its C-family core (C++, C, C#, Objective-C) is generally weaker than for its primary targets
  • There is no built-in hosting, search analytics, or reader-facing help centre features, so publishing the generated docs anywhere usable still requires separate infrastructure

Hasura

  • Active model definition: model/command accessed more than 1,000 times monthly
  • Private DDN requires Base or Advanced plan

Pricing, plan by plan

Doxygen

Free
  • DoxygenFree
    • Full functionality
    • No usage limits
    • Community mailing list and GitHub issue support

Hasura

Free
  • DDN FreeFree
    • Unlimited models
    • 1 supergraph developer
    • 15-minute observability retention
  • DDN Base$5/month
    • Per active model billing
    • Unlimited developers
    • 30-day observability retention
  • DDN Advanced$30/month
    • Per active model billing
    • Federated collaboration
    • Multi-repo CI/CD

Which should you pick?

Choose Doxygen if

  • You need code comment parsing.
  • You want to start without paying.
  • You work on Linux, macOS, Windows.
  • You also want multi-format output.
Doxygen review

Choose Hasura if

  • You need graphql api.
  • You want to start without paying.
  • You also want real-time subscriptions.
Hasura review

Questions people ask

Is Doxygen or Hasura better?
Neither clearly leads. Doxygen starts at Free and Hasura at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Doxygen or Hasura?
Doxygen starts at Free and Hasura at Free.
Does Doxygen or Hasura run on more platforms?
Doxygen runs on Linux, macOS, Windows. Hasura runs on Web.
Can I use Doxygen for free?
Both have a free tier, so you can try either at no cost before committing.
What is Doxygen best used for?
Doxygen is most often used for an engineering team generating api reference documentation directly from source code comments as part of a ci build, a library or sdk maintainer who wants reference docs that cannot drift out of sync with the code because they are generated from it, an internal platform team documenting a large c++ or java codebase where structure like class hierarchies and call graphs matters more than prose, a project with no documentation budget that still needs professional-looking reference output without any licence cost. Of those, an engineering team generating api reference documentation directly from source code comments as part of a ci build and a library or sdk maintainer who wants reference docs that cannot drift out of sync with the code because they are generated from it are not what Hasura is typically brought in for.
What can Doxygen do that Hasura cannot?
Doxygen covers Code comment parsing, Multi-format output, Call and inheritance graphs, Markdown support. Hasura covers GraphQL API, Real-time subscriptions, Access control, PostgreSQL.

Answered from the vendors’ own pages

Doxygen: Is Doxygen really free with no paid tier?

Yes, it is GPL-licensed open source software with no company selling licences or support contracts.

Hasura: How much does Hasura cost?

Hasura DDN Free is free. DDN Base starts at $5/active model/month, and DDN Advanced starts at $30/active model/month.

Source
Doxygen: Does Doxygen write documentation for me?

No, it extracts and formats documentation from comments a developer has already written in the source code; it does not generate prose from uncommented code.

Hasura: What is an active model in Hasura pricing?

An active model is defined as any model or command accessed more than 1,000 times monthly.

Source
Doxygen: Can it produce anything besides reference documentation?

It can render standalone markdown pages alongside the generated reference content, but it is not a general authoring or publishing platform.

Hasura: Is there a free version of Hasura?

Yes, Hasura DDN Free is always free and includes unlimited models, 1 supergraph developer, and 15-minute observability retention.

Source
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