What is Sphinx?
Converts reStructuredText and Markdown into multiple output formats including HTML, PDF, and ePub, with support for automatic API documentation, customizable themes, and internationalization.
Sphinx pricing
We don't have Sphinx's full plan breakdown yet (its pricing page resisted automated reading). Here's what we could confirm. Always check live pricing for exact numbers.
What Sphinx does
The capabilities that matter for documentation tools, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- Tool kind
- Static-site generator
- Engine / language
- Python
- Authoring format
- -
- API reference from OpenAPI / code
- ✓
- Multi-version docs
- ✓
- Internationalisation
- ✓
- Search
- Built-in
- Theming / custom design
- ✓
- Edit-in-Git / WYSIWYG round-trip
- -
- Self-hostable
- ✓
- Official managed host
- ✗
- Built-in usage analytics
- -
Platform & deployment
Independently observed- CLI
- Self-hosted
Security & compliance
Known vulnerabilities: 0 (0 in the last 12 months) sourcea count reflects scale & disclosure, not quality
Sphinx FAQ
Common questions about Sphinx, answered from independent, dated evidence.
What is Sphinx?
Converts reStructuredText and Markdown into multiple output formats including HTML, PDF, and ePub, with support for automatic API documentation, customizable themes, and internationalization. It is indexed under Documentation Tools.
Source: https://www.sphinx-doc.org
Is Sphinx free to use?
Sphinx is open source, so it can be self-hosted and used at no licence cost. Pricing changes often, so verify at source before relying on it.
Source: https://www.sphinx-doc.org
What platforms does Sphinx support?
Sphinx supports a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.
Source: https://www.sphinx-doc.org
Can Sphinx be self-hosted?
Yes. Sphinx can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.
Source: https://www.sphinx-doc.org
Sphinx alternatives
Other documentation tools we track, ranked by the same independent score.
- DocusaurusStatic site generator focused on documentation projectshigh · 79%
- MintlifyA documentation platform that automatically synchronizes content with your codebase and optimizes it for both human developers and AI agents.medium · 74%
- GitBookDocumentation platform that synchronizes with your product code and keeps content accurate through automation and collaborationhigh · 75%
- Read the DocsHost and automatically build documentation from your source code repositorieslow · 44%
- HugoA high-performance static site generator for rapid website developmentlow · 49%
- StarlightDocumentation website generator built on Astromedium · 70%
Compare Sphinx
Side by side against other documentation tools, attribute by attribute, with a source on every value.
The vioscaleAI score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for Sphinx, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Package downloads | 93 | 0.17 | 16.2 | ✓ |
| Release cadence | 99 | 0.07 | 6.7 | ✓ |
| Dependent projects | 81 | 0.08 | 6.4 | ✓ |
| Capabilities | 75 | 0.08 | 6.2 | ✓ |
| Security score | 55 | 0.05 | 2.9 | ✓ |
| Stars | 74 | 0.03 | 2.4 | ✓ |
| Development activity | 15 | 0.12 | 1.8 | ✓ |
| Integrations | 0 | 0.05 | 0.0 | - |
| Security posture | 0 | 0.09 | 0.0 | - |
| Developer Q&A activity | 0 | 0.08 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Activity
| Attribute | Value | Evidence |
|---|---|---|
| Commits last 30d | 2 | mediumsource · 2026-08-26 · 65% |
Adoption
Content
| Attribute | Value | Evidence |
|---|---|---|
| Faq | 4 items | mediumsource · 2026-09-10 · 60% |
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | I18n: Yes · Kind: static_generator · Engine: Python · Search: built_in · Themeable: Yes · Versioning: Yes | mediumsource · 2026-09-14 · 60% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | Python | highsource · 2026-09-11 · 90% |
Pricing
Release
Security
Is Sphinx the right choice for you?
Tell us the job, the constraints and what you weigh most, and we will rank Sphinx against the rest of the documentation tools we index, using the same dated evidence weighted your way.
Free to run, no account needed to start. How the evaluation works
Is this your product?
This profile was built from public sources without asking you. You can take the badge below and use it anywhere, and you can claim the profile to correct anything we got wrong. Both are free, and neither moves Sphinx up or down: nobody can buy rank here, including you.
Take the badge
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<img src="https://www.vioscale.ai/badge/software/sphinx.svg" alt="Sphinx, verified on vioscaleAI" width="330" height="76" loading="lazy" />
</a>Markdown, for a README →
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Verify you control the domain and you can correct the facts, add the sources we should be reading, and see how AI assistants are describing Sphinx. Free, and it does not change the score.
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- Point our crawler at the pages that matter
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