Software · head to head
SimilarWeb vs BuiltWith
The short version
- Each has a real cost: SimilarWeb browser extension data accuracy is lower than full platform; BuiltWith free tier limited to individual site lookups only; no commercial use or reporting
- They diverge on capability: SimilarWeb covers Traffic analytics, BuiltWith covers Technology profiling.
Where they differ
Only the attributes on which SimilarWeb and BuiltWith actually diverge.
| Attribute | SimilarWeb | BuiltWith |
|---|---|---|
| Pricing model | freemium | Unknown |
| Platforms | Web, Browser Extension | Web |
Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Unknown), founded (2007).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in SimilarWeb
- Traffic analytics
- Audience insights
- Competitor research
- Industry analysis
Only in BuiltWith
- Technology profiling
- Market research
- Competitor analysis
- Lead generation
Both cover
- Chrome support
- Firefox support
- Edge support
What people use each for
The jobs each tool is most often brought in to do.
SimilarWeb
No use cases recorded yet. See the SimilarWeb review.
BuiltWith
- Technology intelligence for identifying web technologies used by competitor companiesnot SimilarWeb
- Lead generation using technology adoption and spend data signalsnot SimilarWeb
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
SimilarWeb
- Browser extension data accuracy is lower than full platform
- Full platform pricing is not transparent and requires quote-based inquiry
BuiltWith
- Free tier limited to individual site lookups only; no commercial use or reporting
- Basic plan limited to 2 technologies, 2 keywords, 2 retail reports, and 1 system login
Pricing, plan by plan
SimilarWeb
Free- FreeFree
- Traffic overview
- Engagement metrics
- Similar sites
BuiltWith
FreeNo published plan breakdown. See the BuiltWith review.
Which should you pick?
Choose SimilarWeb if
- You need traffic analytics.
- You want to start without paying.
- You work on Web, Browser Extension.
- You also want audience insights.
Choose BuiltWith if
- You need technology profiling.
- You want to start without paying.
- You also want market research.
Questions people ask
- Is SimilarWeb or BuiltWith better?
- Neither clearly leads. SimilarWeb starts at Free and BuiltWith at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, SimilarWeb or BuiltWith?
- SimilarWeb starts at Free and BuiltWith at Free.
- Does SimilarWeb or BuiltWith run on more platforms?
- SimilarWeb runs on Web, Browser Extension. BuiltWith runs on Web.
- Can I use SimilarWeb for free?
- Both have a free tier, so you can try either at no cost before committing.
- What can SimilarWeb do that BuiltWith cannot?
- SimilarWeb covers Traffic analytics, Audience insights, Competitor research, Industry analysis. BuiltWith covers Technology profiling, Market research, Competitor analysis, Lead generation. Both handle Chrome support, Firefox support, Edge support.
Answered from the vendors’ own pages
SimilarWeb: Is the SimilarWeb browser extension free?
Yes. The SimilarWeb browser extension is completely free to install and use with no paid tiers and no credit card required.
SourceSimilarWeb: How many websites does SimilarWeb cover?
SimilarWeb provides access to intelligence from 1B+ websites and 8M apps, tracks 5B search terms and 250M display ads across 190 countries and 210 industries.
SourceSimilarWeb: How accurate is SimilarWeb extension data?
Browser extension data accuracy is lower than the full platform, but it is adequate for ballpark figures of traffic estimates.
Source