Free and open first

Best Website Audit software in 2026

Website audit software examines websites through crawls and audits. This list is for people who need to review pages, coverage, projects, reports, or integrations while keeping costs in view.

23 apps
Research read 28 Sept 2026
How the order is worked out

1

FreeCrawl

Free plan LinuxMacSelf-hosted+1

Choose FreeCrawl if you want an open-source crawler with unlimited URLs, local project storage, and substantial audit and automation features at no charge.

7.6 Free plan Visit site
2

Lighthouse

Free plan APIExtensionLinux+3

Lighthouse offers several ways to audit web pages and provides reports with results and guidance.

7.5 Open source Visit site
3

Alpha Crawler

Free plan Self-hostedWeb

Alpha Crawler offers broad technical auditing with configurable crawling, schema checks, Search Console data, and exports.

7.4 Free plan Visit site
4

Crab

Free plan LinuxMacWindows

Crab combines technical SEO checks, crawl visualization, and page-level accessibility scores in a desktop app.

7.4 Free plan Visit site
5

Screaming Frog SEO Spider
by Screaming Frog SEO Spider
Free plan APILinuxMac+2

SEO Spider offers technical crawling, JavaScript rendering, data extraction, and integrations across Linux, macOS, and Windows.

7.3 Free plan Visit site
6

Netpeak Spider
by Netpeak Spider
Free plan MacWindows

Netpeak Spider offers a broad technical crawl, reporting options, and a free tier with URL and thread limits. Choose a Pro billing option if those free-tier limits are too restrictive.

7.1 Free plan · 3-day trial Visit site
7

SiteOne Crawler

Free plan APILinuxMac+2

SiteOne Crawler covers multiple site-audit areas and offers reporting, export, and CI/CD features at no listed cost.

7.0 Free plan Visit site
8

SpiderNow

Free plan AndroidAPIExtension+2

SpiderNow combines crawling, technical checks, PageSpeed analysis, and web-development utilities.

7.0 Free plan Visit site
9

WebSite Auditor

Free plan LinuxMacWindows

WebSite Auditor combines crawling, content checks, competitor comparison and search data in a desktop tool.

6.8 Free plan Visit site
10

WooRank

Free plan APIExtensionWeb

Choose WooRank if you want SEO analysis alongside agency reporting and lead-generation tools, with a free plan and trial to explore.

6.8 Free plan · 3-day trial Visit site
11

Sitebaze
by Sitebaze
Free plan API

Sitebaze combines core SEO research and monitoring tools with API access and tiered project limits. Its free plan covers a small setup, while paid plans add capacity and agency-oriented allowances.

6.7 Free plan · paid from €39/mo · 7-day trial Visit site
12

SiteGuru
by SiteGuru
Free plan Web

SiteGuru combines technical and content checks with keyword insights and agency reporting features. Its plans share per-site usage limits, and the Small plan is $49 a month.

6.6 Free plan · paid from $49/mo · 42-day trial Visit site
13

JetOctopus
by JetOctopus
Free trial APIWeb

JetOctopus brings technical SEO data and large-site crawling into one cloud platform, with API and MCP access.

6.1 7-day trial Visit site
14

Sitebulb
by Sitebulb
Free trial ExtensionMacWeb+1

Sitebulb focuses on auditing websites and researching keywords, with plan limits that scale from 10,000 to 10 million URLs.

6.0 14-day trial Visit site
15

Botify
by Botify
Paid APIExtensionWeb

Choose Botify if your team needs search analytics alongside AI visibility and automated content and site actions.

5.9 Pricing on request Visit site
16

Ryte
by Ryte
Free trial APIWeb

Ryte brings website experience, SEO, performance, compliance, and content tools into one analysis platform.

5.9 Pricing on request Visit site
17

Audisto

Paid APIWeb

Audisto combines technical crawling, JavaScript analysis, exports, and monitoring in paid business plans.

5.8 Visit site
18

Lumar
by Lumar
Paid APIWeb

Choose Lumar if an enterprise-scale digital team needs auditing, monitoring, QA automation, and optimization reporting in one platform. Lumar sets project and crawl limits to customer requirements.

5.5 Pricing on request Visit site
19

Oncrawl
by Oncrawl
Paid APIWeb

Choose Oncrawl if your team needs technical SEO analysis across a large or complex website, with crawl data, logs, and performance metrics in one platform.

5.5 Pricing on request Visit site
20

SEOptimer

Paid API

SEOptimer combines several SEO research and monitoring functions with API access. Its paid tiers differ mainly by crawl, keyword, lookup, monitored-site, and user allowances.

5.2 From $29/mo · 14-day trial Visit site
21

SEO Site Checkup

Paid Web

5.2 From $29/mo (annual) Visit site
22

Site Analyzer
by Site Analyzer
Paid API

5.1 From $35/mo Visit site
23

Siteimprove PDF Remediation Agent

Paid Web

3.9 Pricing on request Visit site

#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price

Compare free plans, free trials, and the paid-from price. If reading or changing code matters, check the open-source licence. Review each tool's available platform, crawl allowance, audit schedule, coverage, project capacity, report branding, and integrations.

Questions

What does website audit software do?

These tools perform website crawls or audits, with comparisons covering crawl size, checking schedules, coverage, project capacity, reports, and integrations.

Can I use website audit software for free?

Yes. Tools on this list offer free plans, free pricing, or a free trial. Check the limits and terms of the option you choose.

Is any website audit software open source?

Lighthouse is listed as open source. Check its licence, and the licence of any other tool, before reading or changing code.

Which platforms support these tools?

Available options include web, API, Windows, macOS, Linux, and extensions. Confirm the platform for the tool you want.

What should I compare before choosing?

Assess free access, starting price, crawl allowances, audit schedule and coverage, account projects, branded reports, and built-in integrations.

Questions

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