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SEO Crawler Comparison

Screaming Frog vs Sitebulb vs SiteAuditLint: SEO Crawler Comparison

Compare three desktop SEO crawlers for technical audits, pricing, crawl limits, and tracking improvements after you fix your website.

3 Tools compared0.8.0 SiteAuditLint versionOct 2026 Updated$99 One-time Pro licence
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SiteAuditLint comparisons

SiteAuditLint overview dashboard showing site health, URL health, answer engine readiness, priority fixes, and next moves

The SiteAuditLint interface: find issues, fix problems, and compare audit results.

Choosing an SEO crawler is about more than finding broken links. It also matters how you investigate problems such as redirect chains, missing title tags, and indexability errors, how you manage audit costs over time, and how you measure the changes made after fixing your website.

At-a-glance comparison

The table compares platform support, free access, crawl limits, licence models, and core technical SEO checks across Screaming Frog SEO Spider, Sitebulb Desktop, and SiteAuditLint.

FeatureScreaming FrogSitebulb DesktopSiteAuditLint
PlatformWindows, macOS, LinuxWindows, macOSWindows
Free accessYes14-day trialYes
Free crawl limit500 URLsTrial limits apply100 URLs per audit, all checks
Paid pricing£199/yearSubscription$99 one-time
Paid crawl limitUnlimited*Up to 500,000 URLs per audit on ProUnlimited
Technical SEO auditsYesYesYes
Broken link detectionYesYesYes
Redirect analysisYesYesYes
Title and meta analysisYesYesYes
Historical audit comparisonCrawl comparisonAudit comparison on ProAudit history and comparisons
Main focusDetailed crawling and data exportsVisual audits and prioritized hintsDesktop crawling and tracking progress

*Screaming Frog's paid crawl allowance is not capped by a fixed URL limit, but actual crawl capacity depends on hardware, memory, and configuration. Sitebulb's 500,000-URL figure is its standard Pro limit, with higher limits possible on suitable machines.

Pricing comparison

Screaming Frog

£199/year

Free: 500 URLs

Standard annual licence, renewed each year.

Sitebulb

Subscription

14-day free trial

Monthly or yearly billing across Lite and Pro tiers.

SiteAuditLint

$99 once

Free: 100 pages

One-time payment with unlimited paid crawling.

For people who run technical SEO audits regularly, the total cost of ownership can matter as much as the initial price. Screaming Frog and Sitebulb use recurring licence or subscription models, while SiteAuditLint's published offer is a one-time purchase for unlimited crawling. Over a three-year period, for example, an annual licence is paid three times, while a one-time licence is paid once.

Detailed feature comparison

Technical SEO auditing

All three tools are designed to identify technical website issues, from HTTP status codes and 4xx errors to canonical tags and indexability. The table below lists the specific checks rather than treating every audit feature as identical.

Audit capabilityScreaming FrogSitebulbSiteAuditLint
HTTP status codesYesYesYes
Broken internal linksYesYesYes
Redirect chainsYesYesYes
Missing title tagsYesYesYes
Duplicate titlesYesYesYes
Missing meta descriptionsYesYesYes
Canonical tag checksYesYesYes
Indexability checksYesYesYes
JavaScript renderingYes, paid licenceYesYes, optional Chromium rendering
SiteAuditLint URL health and pages report with response codes and URL structure

URL health with response codes and page-level details

SiteAuditLint site health score and category score panels

Site health score and category scores

Crawl comparison and audit history

A single crawl gives you a snapshot of a website. Repeating the audit shows whether issues have been resolved, whether new ones have appeared, and whether the overall health of the site has changed.

  • Screaming Frog offers crawl comparison tools for comparing saved crawls, including changes in issues, opportunities, and page-level elements.
  • Sitebulb includes audit comparisons on Pro, with historical trendlines and changes between audits that help users investigate improvements and regressions.
  • SiteAuditLint stores audit history on your computer and compares each run against the last, showing previous and current issue counts, the numeric change, and a trend for every issue type.
SiteAuditLint audit history list with date, crawl time, URLs, health, critical issues, and warnings

Audit history with run dates, URL totals, health, criticals, and warnings

SiteAuditLint comparison screen showing previous and current audit issue counts and trends

Comparisons view: previous vs current values and trends

SiteAuditLint since last audit comparison panel showing health and issue changes

Since last audit panel. Figures shown are from a sample website, not typical results.

What makes each crawler different?

Screaming Frog: detailed crawling and data exports

Screaming Frog SEO Spider is a desktop crawler used for technical SEO audits, URL inspection, and data extraction. Its free version supports crawls of up to 500 URLs, while its paid licence removes the fixed crawl limit. It also offers crawl comparison for tracking changes across audits.

  • Crawling and analyzing large URL sets.
  • Custom extraction and detailed data exports.
  • Comparing saved crawls to find changes.
  • Annual licence renewal.

Sitebulb: visual audits and prioritized recommendations

Sitebulb combines technical SEO crawling with visualizations, audit hints, and issue prioritization. Its desktop Pro plan supports up to 500,000 URLs per audit by default, and its 14-day trial gives users access to the Pro experience.

  • Visual site structure and crawl maps.
  • Explanations and prioritization for audit findings.
  • Audit comparisons and reporting.
  • Desktop and cloud options.

SiteAuditLint: track fixes and measure progress

SiteAuditLint is a Windows desktop SEO crawler designed to help website owners and SEO professionals find technical problems and monitor their progress over time. Its focus is the connection between an initial audit, the fixes made, and the results of the next audit.

From crawl results to measurable improvements

  1. Run an initial crawl and record the technical issues found.
  2. Identify and fix problems such as broken links, missing metadata, and redirect errors.
  3. Run another crawl and compare the results against the original audit.
  4. Review which issues have been resolved and which still need attention.

Detected issues translate directly into a list of work to complete. The Priority Fixes panel shows affected URL counts and priority labels, and the Action Plan adds impact and effort for each recommended action.

SiteAuditLint priority fixes panel listing technical issues, URL counts, and priority

Priority fixes summary

SiteAuditLint action plan table with issue actions, URL counts, impact, and effort

Action plan with impact and effort

Example: website audit improvements

Illustrative audit comparison, not actual SiteAuditLint results

This example follows an indexability clean-up: sitemap entries pruned to live, indexable URLs, canonical tags added or corrected, and redirect chains collapsed.

IssueBeforeAfterChange
Non-indexable URLs in XML sitemap646−58
Canonical points to another URL3811−27
Missing canonical tag293−26
Redirect chains172−15
Total listed issues14822−126
85.1%reduction in listed indexability issues between the two example audits

The important message is that an audit should not end with a list of errors. Comparing results over time shows whether the work completed has actually reduced the number of detected issues.

Which crawler should you choose?

Rather than declaring one tool the overall winner, match the software to your workflow.

Screaming Frog

Consider it if you want a detailed desktop crawler, extensive data exports, and flexibility in how you analyze crawl results.

Screaming Frog SEO Spider

Sitebulb

Consider it if you want visual audit reports, prioritized recommendations, and access to desktop and cloud workflows.

Sitebulb

SiteAuditLint

Consider it if you want a Windows desktop crawler with a one-time payment, unlimited paid crawling, and an emphasis on reviewing audit improvements over time.

Explore SiteAuditLint

Indexability and canonical tag checks in SiteAuditLint 0.8.0

Indexability is where the three crawlers overlap most, and where the reporting style differs. Screaming Frog exposes indexability status as a column you filter and export. Sitebulb groups findings into prioritised Hints inside visual audit reports. SiteAuditLint 0.8.0 reports each indexability problem as its own issue type with a fix, so it lands in the Action Plan with an affected URL count:

  • Noindex directive from a meta robots tag or an X-Robots-Tag header.
  • Missing canonical tag and canonical points to another URL, so you can confirm canonicalised pages are intentional.
  • Blocked by robots.txt for URLs crawlers are not allowed to fetch.
  • Non-indexable URL in XML sitemap and non-200 URL in XML sitemap, the conflicting signals that erode trust in a sitemap.
  • Orphan page (sitemap only) and deep page (more than 4 clicks), which affect how easily crawlers reach a page.

With optional Chromium rendering switched on, these checks run against the rendered page, which matters for sites that inject canonical tags or robots directives with JavaScript. Every check above is included in the Free edition, up to 100 URLs per audit.

Frequently asked questions

Is SiteAuditLint an alternative to Screaming Frog?

SiteAuditLint is a Windows desktop SEO crawler that can be compared with Screaming Frog on technical auditing, crawl limits, pricing, and audit history. The right choice depends on the features and workflow you need, such as custom extraction, JavaScript rendering, or tracking fixes between audits.

Is SiteAuditLint cheaper than Screaming Frog?

SiteAuditLint's published paid offer is $99 as a one-time payment, while Screaming Frog's standard paid licence is £199 per year. Compare the total cost over the period you expect to use the software, as well as any additional features you require.

Does Sitebulb have a free version?

Sitebulb offers a 14-day free trial of its desktop software. Its Lite and Pro plans are paid subscriptions, with different crawl limits and feature access.

Can these tools compare SEO audits?

Yes. Screaming Frog offers crawl comparison between saved crawls, Sitebulb includes audit comparisons on Pro, and SiteAuditLint provides audit history, a comparisons view, and a since last audit summary showing previous and current issue counts.

Which SEO crawler is suitable for Windows?

All three run on Windows. Screaming Frog also runs on macOS and Linux, Sitebulb also runs on macOS and offers a cloud option, and SiteAuditLint is built specifically as a Windows desktop crawler.

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