The best open source alternative to Screaming Frog SEO Spider is SiteOne Crawler. If that doesn't suit you, our users have ranked more than 100 alternatives to Screaming Frog SEO Spider and eight of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Screaming Frog SEO Spider are Google Lighthouse, PageSpeed Insights, SEOnaut and SEO Macroscope.
A free in-depth website analyzer providing audits of security, performance, SEO, accessibility and other technical aspects. Available as a desktop application for Windows/macOS/Linux and as a CLI tool for advanced users and CI/CD processes. It also includes an offline web page exporter.
Lighthouse is an open-source, automated tool for improving the quality of web pages. You can run it against any web page, public or requiring authentication. It has audits for performance, accessibility, progressive web apps, SEO and more.
PageSpeed Insights (PSI) reports on the performance of a page on both mobile and desktop devices, and provides suggestions on how that page may be improved.
SEOnaut is an open source SEO auditing tool that checks your website for any issues that might be affecting your search engine rankings. It crawls your site and gives you a report with a list of any problems it finds, organised by how important they are to fix.
SEO Macroscope is a website scanning tool, to check your website for broken links; including some technical SEO functionality, site scraping, Excel reporting, and more.
Open-Source Python Based SEO Web Crawler Free SEO Analysis Tool Made by SEOs for Digital Marketing Experts
Analyse and improve your onsite SEO Audit and identify any server issues Extract any on-page information you need.
Free desktop SEO crawler - open source alternative to Screaming Frog and similar tools. Crawl websites, analyze links, extract SEO data, and export results without subscription fees.
Traffic Torch is a free, open-source, privacy-first SEO and UX analysis toolkit that runs 100% in the browser client-side only. No account required, no tracking, no server-side data storage. Simply enter any website URL to get an instant comprehensive 360° health score...
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