Screaming Frog SEO Spider vs SiteOne Crawler

Screaming Frog SEO Spider7.9Visit SiteOne Crawler7.9Visit

Screaming Frog SEO Spider #3 in SEO Crawler Software 7.9/10 Free plan Free plan✓ 1 of 6 features Visit Screaming Frog

vs

SiteOne Crawler #6 in SEO Crawler Software 7.9/10 Free plan Free plan✓ 1 of 6 features Visit SiteOne

• Screaming Frog SEO Spider fits best

  Teams needing a mature, full-featured SEO crawler

• SiteOne Crawler fits best

  Developers needing open-source crawl QA

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Side by side

Feature	Screaming Frog SEO Spider 7.9/10 Visit ↗	SiteOne Crawler 7.9/10 Visit ↗
At a glance
Editor score	7.9	7.9
Ranking	#3 in SEO Crawler Software	#6 in SEO Crawler Software
Best for	Teams needing a mature, full-featured SEO crawler	Developers needing open-source crawl QA
Pricing model	Free plan + paid	Free
Starting price	—	Free
Free plan	✓	✓
Free trial	—	—
Deployment	Desktop	Desktop
Platforms	Windows, macOS, Linux	Windows, macOS, Linux
Support	Email, Tickets, Phone, Docs	Docs
Integrations	10 integrations	7 integrations
Built for	Solo, Small business, Mid-market, Enterprise	Solo, Small business, Mid-market
Features Screaming Frog SEO Spider 1/6 · SiteOne Crawler 1/6
JavaScript rendering	Not checked yet	Not checked yet
Scheduled crawls	Not checked yet	Not checked yet
Log-file analysis	Not checked yet	Not checked yet
Mobile crawling	Not checked yet	Not checked yet
Custom data extraction	Not checked yet	Not checked yet
API access	✓	✓
Specs
Crawl limit	Not checked yet	Not checked yet
Our review
Pros	Broad technical audits cover links, metadata, directives, duplicates and structured data JavaScript rendering, custom extraction and crawl comparison support deeper analysis Integrates with analytics, search, backlink and AI platforms	Deep audits across SEO, performance, accessibility, security, and best practices JavaScript rendering, offline cloning, sitemap generation, and Markdown exports CI/CD quality gates with JUnit XML and GitHub annotations
Cons	The free plan limits each crawl to 500 URLs Advanced features require a paid licence Desktop software rather than a standalone keyword-rank tracking platform	Its broad audit scope may exceed the needs of SEO-only teams AI analysis is optional and requires a bring-your-own-LLM setup CLI and desktop interfaces may not suit browser-based workflows
Our verdict	Screaming Frog SEO Spider is a desktop website crawler for technical SEO audits. It is designed for SEO professionals, agencies, brands and website owners that need to inspect crawlable site data rather than manage keyword rankings. The… Read the review →	SiteOne Crawler is a free, open-source website crawler for developers, DevOps teams, QA engineers, website owners, and SEO consultants. It crawls website pages and assets, then produces interactive HTML, text, and JSON reports covering… Read the review →

Strengths and trade-offs

• Screaming Frog SEO Spider — where it wins

  • Broad technical audits cover links, metadata, directives, duplicates and structured data
  • JavaScript rendering, custom extraction and crawl comparison support deeper analysis
  • Integrates with analytics, search, backlink and AI platforms

  Where it doesn't

  • The free plan limits each crawl to 500 URLs
  • Advanced features require a paid licence
  • Desktop software rather than a standalone keyword-rank tracking platform

• SiteOne Crawler — where it wins

  • Deep audits across SEO, performance, accessibility, security, and best practices
  • JavaScript rendering, offline cloning, sitemap generation, and Markdown exports
  • CI/CD quality gates with JUnit XML and GitHub annotations

  Where it doesn't

  • Its broad audit scope may exceed the needs of SEO-only teams
  • AI analysis is optional and requires a bring-your-own-LLM setup
  • CLI and desktop interfaces may not suit browser-based workflows

• Screaming Frog SEO Spider7.9/10 · Free plan

  A mature crawler for deep technical audits, with a capable free tier.

  Visit Screaming FrogFull verdict →
• SiteOne Crawler7.9/10 · Free plan

  A developer-focused crawler for deep audits, rendering, exports, and CI/CD quality gates.

  Visit SiteOneFull verdict →