Screaming Frog vs Similarweb
A source-aware comparison of pricing, documented capabilities and workflow fit.
Short answer
- Price: not directly comparable — Screaming Frog is free tier available, Similarweb is free tier available.
- How to start: both are free tier available.
- Where they differ: only Similarweb has public api and sso (saml).
These lines are generated from the pricing we track, not from a paid placement. How we score tools.
What Screaming Frog is
Screaming Frog is a desktop crawler that walks your site like a search engine and reports technical problems. Running on your own machine means no crawl quota and full control over speed, headers and rendering, which matters on large or access-restricted sites. In exchange, crawl size is limited by your RAM and there is no scheduled monitoring unless you set it up yourself.
What Similarweb is
Similarweb estimates website traffic, referral sources and audience overlap for any domain. It is one of the few ways to size a competitor you have no access to, which is why it is used in market research and pitch work. Everything it reports is an estimate from panel and clickstream modelling, so treat the direction and the ratios as the signal, not the absolute numbers.
Side by side
| Screaming Frog | Similarweb | |
|---|---|---|
| Category | Marketing | Marketing |
| How to start | Free tiernot a monthly price | Free tiernot a monthly price |
| Public API | No | Yes |
| Mobile app | No | No |
| Open source / self-hostable | No | No |
| SSO (SAML) | No | Yes |
| Visit | Screaming Frog ↗ | Similarweb ↗ |
What Screaming Frog is built to do
- Desktop site crawler
- Crawls a site locally and reports status codes, redirects, titles and canonicals.
- JavaScript rendering
- Renders pages with a headless browser to crawl client-side content.
- API integrations
- Pulls Search Console, Analytics and PageSpeed data onto crawled URLs.
What Similarweb is built to do
- Traffic estimates
- Models visits, engagement and growth for domains you do not own.
- Traffic sources
- Splits estimated traffic across search, referral, social and direct.
- Audience overlap
- Shows which other sites a domain's visitors also use.
Choose Screaming Frog if
- Anyone responsible for technical SEO on a site of real size.
Choose Similarweb if
- Marketing and strategy teams sizing competitors and markets.
Evidence and freshness
Where a claim on this page comes from a vendor page, it is linked here.
Screaming Frog: pros & cons
- Finds technical issues nothing else catches
- One-off annual licence, no per-seat cloud fees
- Crawls as deep as your machine allows
- Desktop only, no collaboration
- Output needs SEO knowledge to interpret
- Large sites need a powerful machine
Similarweb: pros & cons
- Competitive traffic estimates in one place
- Channel breakdown and referrers
- Useful for market sizing
- Estimates, not measurements — accuracy varies
- Expensive for full access
- Small sites have unreliable data
Our verdict on Screaming Frog
Still the standard technical crawler. It reports; interpreting is your job.
Our verdict on Similarweb
Treat the numbers as directional. For small sites the error bars swallow the signal.