The SEOnaut Insider’s Guide
Everything we know about SEOnaut in one document: what it costs, its grades, getting a refund, getting help and what else to look at. Read it here, or keep a copy.
SEOnaut
The Insider’s Guide
Open-source SEO site audit tool, self-hosted or in the cloud
Every plan, grade, refund rule and rival among technical SEO tools, read from SEOnaut’s own pages.
Made by SEOnaut · checked Oct 23, 2026 · toolgpa.com
Contents
- 01WelcomeWhat it is, who it suits, its grades and the ten things to know first
- 02What it costsEvery plan, the free plan, ways to pay less and how prices have moved
- 03What it doesIts main features, where it runs, what it works with and who makes it
- 04Where it standsIts grades against its category, and whether to keep it or make your own
- 05The alternativesThe tools it is most often weighed against, side by side
- 06Quick answersThe questions people ask about it, each answered in a line or two
- 07About ToolGPAWho made this guide, what else is on the site, and how to cite it
ToolGPA put this guide together from SEOnaut’s own pages, its app-store listings and our grades. Every fact in it is on SEOnaut’s page too, where it is kept up to date. Checked Oct 23, 2026.
Part 01 · Overview
Welcome
What it is, who it suits, its grades and the ten things to know first
2.4
GPA, above 41 of the 83 other technical SEO tools we grade
SEOnaut is an MIT-licensed technical SEO auditor that crawls a website and sorts the problems it finds into critical, high and low severity. It checks links, redirects, meta tags, headings, hreflang, images, canonicals and HTTPS, and shows the results on a dashboard with history over time. It can be run on your own server with Docker or used as a hosted service with a free plan and a $9 monthly plan.
To get you started, here are 9 things to know about SEOnaut, taken from its own pages and our grades.
- 1
Best for budget site audits, hosted or on your own server
SEOnaut crawls a site and sorts what it finds, from broken links and redirect loops to hreflang and canonical errors, into critical, high and low, with history on a dashboard.
- 2
Paid plans start at $9 a month
As its pricing page puts it: $9 per month, billed monthly.
- 3
There is a free plan
Lite plan on the hosted service: 1 project and up to 500 URLs per project, no credit card. The self-hosted Community edition is free with no plan limits.
- 4
It runs on Web
Web.
- 5
Issues ranked by severity
Each crawl produces a report that groups problems as critical, high or low, from broken links and redirect loops to duplicate titles and descriptions.
- 6
On-page and content checks
Audits titles, descriptions, heading order, hreflang tags, image alt text and file size, thin or duplicated content, canonicals and HTTP pages.
- 7
Crawl settings
The crawler can ignore robots.txt, follow nofollow links, include sitemaps and subdomains, check external links and log in to staging sites with HTTP Basic Auth.
- 8
A 2.4 GPA, above 41 of 83
That is against the other technical SEO tools we grade, on value, the free plan, features, ease of use and platforms.
- 9
Your call
SEOnaut sits between: not beyond making, and not a weekend's work either.
SEOnaut at a glance
- Pricing
- Free plan, from $9 per month, billed monthly
- Free plan
- Yes
- Free trial
- None stated
- Runs on
- Web
- Made by
- SEOnaut
- Category
- Technical SEO & Site Audits
- Our grade
- 2.4 GPA, fair
The report card
Best for budget site audits, hosted or on your own server
SEOnaut crawls a site and sorts what it finds, from broken links and redirect loops to hreflang and canonical errors, into critical, high and low, with history on a dashboard. The hosted free plan stops at 1 project of 500 URLs, Growth at $9 a month stops at 5 projects of 10,000, and running it yourself means Docker or Go plus MySQL.
| Subject | Grade | Comment |
|---|---|---|
| Value for money | B | Growth is $9 a month for 5 projects of up to 10,000 URLs each, inside this category's cheaper quarter of $13, and a yearly plan gives one month free. The free self-hosted edition needs a server of your own. |
| Free plan and trial | B | The hosted Lite plan is free with no card: 1 project of up to 500 URLs, crawled when you ask. A small site can live on that, though recurring audits are Growth only. |
| Features | C | Issues ranked by severity, title, heading, hreflang, image, canonical and thin-content checks, orphan pages, history charts and WACZ archives. The gaps: the listing records no JavaScript rendering, Search Console data or API, and hosted plans stop at 10,000 URLs a project. |
| Ease of use | C | No rating on record. The hosted version means an account and a project before the first crawl; self-hosting needs Docker or Go, MySQL and a reverse proxy for HTTPS. |
| Platforms and integrations | C | Web only, with a Docker image for running it yourself. No API, integrations, desktop or phone app on record. |
An A is worth 4 points, a B 3, a C 2, a D 1 and an F nothing. The GPA is the average of the five.
Who SEOnaut is for
- Fits if your site fits in 500 URLs and you want a free hosted crawler
- Works for teams that want to run their SEO crawler on their own server
Who it is not for
- Tight if you outgrow Growth's 5 projects of 10,000 URLs, as more means emailing the developer
- Watch out: self-hosting needs Docker or Go plus MySQL, and HTTPS through a reverse proxy
- Not for you if you want support beyond email, as self-hosted copies go through GitHub Issues
- Skip it if you want free audits on a schedule, as only the paid Growth plan lists recurring audits
Good to know
Good for
- Small sites that fit within 500 URLs on the free hosted plan
- Teams that want to run their SEO crawler on their own server
- Budget technical audits of up to five sites
Worth knowing
- The hosted Growth plan stops at 5 projects and 10,000 URLs each; larger needs are handled by emailing the developer.
- Self-hosting needs Docker or Go plus a MySQL database, and the project recommends adding HTTPS through a reverse proxy.
- Support is by email for the hosted service and through GitHub Issues for self-hosted copies; there is no forum.
- Of the hosted plans, only the paid Growth plan lists recurring audits; Lite crawls run on demand.
Part 02 · Pricing
What it costs
Every plan, the free plan, ways to pay less and how prices have moved
$9
A month to start. There is a free plan too
SEOnaut has a free plan. Paid plans start at $9 per month, billed monthly.
The free self-hosted edition needs a server of your own.
Community
$0
The open-source edition under the MIT license, which you host and manage yourself on your own infrastructure.
Lite
$0
Cloud hosted: 1 project with up to 500 URLs per project. No credit card required.
Growth
$9
per month for 5 projects of up to 10,000 URLs each
Cloud hosted: 5 projects, 10,000 URLs per project and recurring audits. An annual plan gives one month free.
The free plan
Lite plan on the hosted service: 1 project and up to 500 URLs per project, no credit card. The self-hosted Community edition is free with no plan limits.
Read from seonaut.org on Oct 23, 2026.
Ways to pay less
Annual discount
One month free with annual billing
SEOnaut's pricing FAQ says the annual plan gives one month free compared with paying monthly.
Stated on seonaut.org
Part 03 · Features
What it does
Its main features, where it runs, what it works with and who makes it
1
Place it runs: Web
Open-source SEO site audit tool, self-hosted or in the cloud. Here is what it does, as its own site describes it, and what it covers: open source, self-hostable, site audit.
Web only, with a Docker image for running it yourself.
- Issues ranked by severity
- Each crawl produces a report that groups problems as critical, high or low, from broken links and redirect loops to duplicate titles and descriptions.
- On-page and content checks
- Audits titles, descriptions, heading order, hreflang tags, image alt text and file size, thin or duplicated content, canonicals and HTTP pages.
- Crawl settings
- The crawler can ignore robots.txt, follow nofollow links, include sitemaps and subdomains, check external links and log in to staging sites with HTTP Basic Auth.
- Site structure and dashboard
- Spots orphan and dead-end pages, checks response time and timeouts, and charts site health over time on a visual dashboard.
- WACZ archives
- Saves a crawled site as a WACZ web archive, keeping pages and assets for offline review or record-keeping.
- Self-hosting with Docker
- Written in Go with a MySQL database; the project publishes a Docker image and a Docker Compose file, and the interface can be translated.
Where it runs
- Web
What it works with
- Docker
- MySQL
SEOnaut is made by SEOnaut.
Part 04 · Standing
Where it stands
Its grades against its category, and whether to keep it or make your own
41/83
Other technical SEO tools it is graded above
SEOnaut's GPA of 2.4 is higher than 41 of the 83 other technical SEO tools we grade, and level with 14.
It stands best on free plan and trial (B, above 51 of 83) and worst on platforms and integrations (C, above 3).
Its paid plans start at $9 a month, against a middle price of $22.41 for the category: 6 of the 52 others that charge start lower.
On features, ease of use and platforms it scores 2.0 out of 4. 14 tools score higher and cost less.
Each grade against the category
Every bar is all 84 technical SEO tools we grade, cut by the letter each got. SEOnaut’s own letter is outlined.
- BValue for moneyAbove 43 of 83
- BFree plan and trialAbove 51 of 83
- CFeaturesAbove 10 of 83
- CEase of useAbove 7 of 83
- CPlatforms and integrationsAbove 3 of 83
Price against what you get
Each dot is one of 73 technical SEO tools. Further left costs less; higher up scores better on features, ease of use and platforms. SEOnaut is the marked dot.
What paid plans start at, a month (each step along is roughly double) →
Keep it, or make your own?
Whether this is something you could build for yourself with an AI app builder, and what you would give up.
Your call
SEOnaut sits between: not beyond making, and not a weekend's work either.
What you would give up is listed below. Whether that is worth the price is your call. It costs $108 a year. SEOnaut is open source, so there is a third way: take its code and run it yourself.
What you could make
- It runs in a browser, which is where something home-made would run too.
What you could not
- A crawler that checks every page of a site.
What this rests on. SEOnaut’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
Part 05 · Alternatives
The alternatives
The tools it is most often weighed against, side by side
Screaming Frog SEO Spider, SiteOne Crawler, Sitebulb, LibreCrawl and SiteGuru
The 5 tools SEOnaut is most often weighed against, with where each one differs from it.
- 2.4GPA
Screaming Frog SEO Spider
Free plan · from $279/yr
Desktop website crawler for technical SEO audits.
- Only SEOnaut lists a web app.
- Only Screaming Frog SEO Spider lists Windows, macOS and Linux apps.
- SEOnaut is open source and self-hostable, according to its own site.
- 3.0GPA
SiteOne Crawler
Free
Free open-source site crawler and audit report, as an app or CLI.
- Only SEOnaut lists a web app.
- Only SiteOne Crawler lists macOS, Windows and Linux apps.
- SEOnaut is self-hostable, according to its own site.
- 2.6GPA
Sitebulb
Free trial · from $18/mo
Website auditing crawler for Windows and Mac, with a cloud edition.
- SEOnaut has a free plan. Sitebulb does not, though it has a free trial.
- Only Sitebulb lists Windows and macOS apps.
- SEOnaut is open source and self-hostable, according to its own site.
- 2.6GPA
LibreCrawl
Free
Free open-source SEO crawler you run in your own browser.
- Only LibreCrawl lists Windows, macOS and Linux apps.
- 2.2GPA
SiteGuru
Free plan · from $39/mo
SEO audit tool that turns site crawls into a prioritized task list.
- SEOnaut is open source and self-hostable, according to its own site.
- SiteGuru also covers reports, backlink analysis, schema markup, internal linking and page speed.
Part 06 · Questions
Quick answers
The questions people ask about it, each answered in a line or two
13
Questions, each answered in a line or two
The short version of everything above, for when you only need the answer. Each one is told in full in its part of the guide.
Is SEOnaut free?
SEOnaut has a free plan. Lite plan on the hosted service: 1 project and up to 500 URLs per project, no credit card.
How much does SEOnaut cost?
SEOnaut lists 3 plans. Community: $0.
What platforms does SEOnaut work on?
SEOnaut is available on Web.
Does SEOnaut offer any discounts?
SEOnaut publicly lists the following: One month free with annual billing.
Does SEOnaut have an Android app?
No Android app was listed when its pages were read on Oct 23, 2026. SEOnaut is listed for Web.
Does SEOnaut have an iPhone app?
No iPhone app was listed when its pages were read on Oct 23, 2026. SEOnaut is listed for Web.
Is SEOnaut open source?
Yes. SEOnaut is open source, according to its own site.
What does SEOnaut integrate with?
SEOnaut's listing names Docker and MySQL. A listing names up to eight integrations, so it may connect to more.
Who makes SEOnaut?
SEOnaut is made by a company of the same name.
What are the alternatives to SEOnaut?
The closest alternatives to SEOnaut in our directory are Screaming Frog SEO Spider, SiteOne Crawler, Sitebulb, LibreCrawl and SiteGuru.
How does SEOnaut compare with other technical SEO tools?
SEOnaut's GPA of 2.4 is higher than 41 of the 83 other technical SEO tools we grade, and level with 14.
Is SEOnaut good value for money?
ToolGPA grades SEOnaut B for value for money. Its paid plans start at $9 a month, against a middle price of $22.41 for the category: 6 of the 52 others that charge start lower.
Could I make my own version of SEOnaut?
SEOnaut sits between: not beyond making, and not a weekend's work either.
Where this guide comes from
The prices, plans, platforms and features were read from SEOnaut’s own pages on Oct 23, 2026, and the grades were given on Oct 23, 2026. Graded from this listing, whose facts were read from SEOnaut's own pages on 23 October 2026. Not based on using the product, and shorter than our full reviews.
Every tool we list gets five grades, A to F, each with its reason, and a GPA that averages them. How each is decided is at toolgpa.com/grades. This guide is ToolGPA’s own work; it is not made, paid for or approved by SEOnaut. Prices change, so check seonaut.org before you buy.
Part 07 · About
About ToolGPA
Who made this guide, what else is on the site, and how to cite it
3,189
Tools graded, in 94 categories
ToolGPA grades software the way a school report grades a pupil: five subjects, a letter for each with the reason written beside it, and a GPA that averages them. Prices, plans and platforms are read from each maker’s own pages and dated, so you always know how fresh a figure is.
Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Every tool on the site has a guide like this one, free to download and pass on. It all lives at toolgpa.com.
3,189
tools graded
94
categories
426
price changes on record
579
apps priced in 12 countries
What else is on toolgpa.com
- SEOnaut, kept up to dateEverything in this guide, with prices and grades as they are todaytoolgpa.com/tools/seonaut
- How grades are givenThe rules behind every letter and every GPAtoolgpa.com/grades
- Value chartsWhat each tool costs against what it scores, for every categorytoolgpa.com/charts
- CompareAny two tools side by side, plan by plantoolgpa.com/compare
- Price changesEvery price rise and cut on record, each with its sourcetoolgpa.com/price-changes
- Prices by countryWhat apps cost on the App Store in 12 countriestoolgpa.com/prices-by-country
- Pay lessEvery public discount: yearly billing, students, nonprofitstoolgpa.com/save
- Keep or makeWhich tools are worth paying for, and which you could build yourselftoolgpa.com/keep-or-make
Scan for the live page
Prices and grades as they are today
Quoting this guide?
Please name ToolGPA and link to the live page, so readers can check the figures for themselves:
ToolGPA, "SEOnaut: The Insider's Guide", checked Oct 23, 2026. https://toolgpa.com/tools/seonaut
Know someone choosing between technical SEO tools?
Send them this guide: toolgpa.com/tools/seonaut/guide
ToolGPA elsewhere: youtube.com/@toolgpa
See our other guides
The best-graded technical SEO tools after SEOnaut, each with an Insider's Guide of its own.
- Technical SEO & Site Audits Insider's GuideEvery one of the 84 technical SEO tools we grade, compared
- Lighthouse Insider's GuideGoogle's open-source audit of page speed, accessibility and SEO3.2 GPA
- PageSpeed Insights Insider's GuideFree Google speed test with real-user Core Web Vitals and Lighthouse3.2 GPA
- Yellow Lab Tools Insider's GuideFree open-source audit of a page's speed and front-end code3.2 GPA
Choosing software? Every tool graded, every price dated.
Compare tools at toolgpa.com ›Everything in this guide is ToolGPA’s own summary of what SEOnaut’s pages, its app-store listings and public reviews said on the dates shown. Grades are our judgement under the rules at toolgpa.com/grades. Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. SEOnaut is a trademark of its owner, and this guide is not made, paid for or approved by SEOnaut. Prices and plans change: check seonaut.org before you buy.