Alpha Crawler
6.8#8 in website audit softwareFree planFree planWebSelf-hosted
VisitAlpha Crawler vs Screaming Frog SEO Spider
Screaming Frog SEO Spider
8.6#5 in seo toolsFree planFree planAPILinuxmacOSSelf-hosted
VisitWhat both publish
| Fact | Alpha Crawler | Screaming Frog SEO Spider |
|---|---|---|
| Company size | The official pages describe a team but do not state a headcount, legal entity name, funding amount or headquarters address. | LinkedIn lists the company size as 11–50 employees. |
| Free plan | Yes | Yes |
| Intended users | The maker describes the product as free for website owners and offers custom plans for SEO agencies and large enterprises auditing multiple sites. | The maker describes the tool as designed for experienced SEOs and says it is trusted by professional SEOs, agencies, and brands for technical SEO audits. |
| JavaScript rendering | A rendering mode analyzes client-rendered React, Vue, Angular and Next.js sites alongside server-rendered sites. | Integrated headless Chromium renders JavaScript sites and frameworks including Angular, React and Vue. |
Alpha Crawler plans
- FreeFree
- Agency PlanPriced on request
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
Pick Alpha Crawler if…
You want what its maker publishes above — check its page for the details.
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.