Screaming Frog SEO Spider
8.6#5 in seo toolsFree planFree planAPILinuxmacOSSelf-hosted
VisitScreaming Frog SEO Spider vs SiteOne Crawler
SiteOne Crawler
6.5#10 in website audit softwareFree planFree planAPILinuxmacOSSelf-hosted
VisitWhat both publish
| Fact | Screaming Frog SEO Spider | SiteOne Crawler |
|---|---|---|
| AI integrations | AI crawling supports OpenAI, Gemini, Ollama and Anthropic prompts. | Its opt-in AI assistant supports OpenAI, Anthropic, Google Gemini, vLLM, Ollama, LM Studio, and OpenAI-compatible endpoints. |
| API access | Yes | Yes |
| Free plan | Yes | Yes |
| Purpose | The SEO Spider is a website crawler that audits sites for over 300 SEO issues to help improve SEO and user experience. | SiteOne Crawler crawls websites and analyzes SEO, performance, accessibility, security, best practices, and content, then produces an interactive HTML report or text and JSON output. |
Screaming Frog SEO Spider plans
- FreeFree
- Paid licence—
- Free VersionFree
- Paid licence (20+)$235 a year
- Paid licence (10–19)$249 a year
- Paid licence (5–9)$265 a year
SiteOne Crawler plans
- FreeFree
- SiteOne CrawlerFree
Pick Screaming Frog SEO Spider if…
It is aimed at experienced SEOs and may suit agencies, brands and site owners conducting technical audits. JavaScript-heavy sites may benefit from its page rendering and framework support.
Pick SiteOne Crawler if…
You want what its maker publishes above — check its page for the details.