Alternatives to Sitebulb
A website crawler for technical SEO audits, available as desktop software and a cloud service. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
Sitebulb
A website crawler for technical SEO audits, available as desktop software and a cloud service.
Replacements
Listings that take over the same core job as Sitebulb.
Screaming Frog SEO Spider
A desktop website crawler for Windows, macOS and Linux that audits sites for technical SEO issues.
Screaming Frog SEO Spider is a desktop crawler for Windows, macOS and Linux with a free tier up to 500 URLs and a paid yearly licence for advanced features.
Semrush Site Audit
A website audit tool in the Semrush platform that crawls a site for SEO and AI search issues.
Semrush Site Audit runs in the browser and connects to the wider Semrush toolset, with a limited free crawl and a paid subscription for full use.
Sitechecker
An online SEO audit platform with a free on-page checker, site crawler, rank tracker and monitoring.
Sitechecker is a web platform with a free page audit, crawler, monitoring and rank tracking, and offers pay-as-you-go one-time audits.
Ahrefs Free
Free website analytics, technical site audit and SEO metrics from Ahrefs for verified websites.
Ahrefs Free provides a no-cost technical site audit with backlink data, but only for sites whose ownership you verify.
Similar software
Related functionality, not a direct replacement.
LinkChecker
Open-source command-line tool that checks links in web pages or crawls whole websites for broken ones.
TechnicalSEO robots.txt Tester
A web tool that validates robots.txt and checks whether a given URL is blocked.
Redirect Checker
A free web tool that traces a URL's redirects and reports each status code in the chain.
XML Sitemap Validator
An online tool that checks whether an XML sitemap is correctly formatted before submission.
Rocket Validator
A hosted crawler that runs HTML, CSS and accessibility checks across thousands of site pages.
httpstatus.io
A web tool for checking HTTP status codes, response headers and redirect chains of URLs.