Software · head to head
SimilarWeb vs Keeper
The short version
- Each has a real cost: SimilarWeb browser extension data accuracy is lower than full platform; Keeper free tier is severely limited to 10 passwords on a single device; essentially a trial rather than a usable free version
- They diverge on capability: SimilarWeb covers Traffic analytics, Keeper covers Password management.
Where they differ
Only the attributes on which SimilarWeb and Keeper actually diverge.
| Attribute | SimilarWeb | Keeper |
|---|---|---|
| Pricing model | freemium | Unknown |
| Platforms | Web, Browser Extension | Chrome, Firefox, Edge, Safari, Brave, Opera, iOS, Android, macOS, Windows |
| Founded | 2007 | 2011 |
Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Unknown).
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 Keeper
- Password management
- Zero-knowledge encryption
- Secure file storage
- BreachWatch
- Safari support
- Opera support
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.
Keeper
- Business and enterprise password management with zero-knowledge encryptionnot SimilarWeb
- Privileged access management for admin and service accountsnot SimilarWeb
- Secure remote access and privileged session recordingnot SimilarWeb
- Application secrets management through Secrets Managernot SimilarWeb
- Government deployments requiring FedRAMP Highnot 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
Keeper
- Free tier is severely limited to 10 passwords on a single device; essentially a trial rather than a usable free version
- Personal plan at $1.79/month is promotional pricing; regular price is higher, making budget comparison difficult
Pricing, plan by plan
SimilarWeb
Free- FreeFree
- Traffic overview
- Engagement metrics
- Similar sites
Keeper
Free- FreeFree
- 10 passwords max
- Single device only
- No sync
- Personal$1.79/month
- Unlimited passwords
- All devices
- 2FA support
- Family$3.83/month
- Up to 5 users
- Unlimited storage
- Shared vaults
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 Keeper if
- You need password management.
- You want to start without paying.
- You work on Chrome, Firefox, Edge, Safari, Brave, Opera, iOS, Android, macOS, Windows.
- You also want zero-knowledge encryption.
Questions people ask
- Is SimilarWeb or Keeper better?
- Neither clearly leads. SimilarWeb starts at Free and Keeper at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, SimilarWeb or Keeper?
- SimilarWeb starts at Free and Keeper at Free.
- Does SimilarWeb or Keeper run on more platforms?
- SimilarWeb runs on Web, Browser Extension. Keeper runs on Chrome, Firefox, Edge, Safari, Brave, Opera, iOS, Android, macOS, Windows.
- 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 Keeper cannot?
- SimilarWeb covers Traffic analytics, Audience insights, Competitor research, Industry analysis. Keeper covers Password management, Zero-knowledge encryption, Secure file storage, BreachWatch. 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.
SourceKeeper: Is there a free version of Keeper?
Keeper offers a free version with very limited functionality: it stores only 10 passwords on a single mobile device with no cross-device sync. A 30-day free trial provides full access to all features.
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.
SourceKeeper: What are Keeper's paid pricing plans?
Keeper Personal starts at $1.79/month (promotional pricing) with annual billing. Keeper Family covers up to 5 users at $3.83/month annually. Both include unlimited password storage, cross-device sync, and 2FA support.
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.
SourceKeeper: What browsers and devices does Keeper support?
Keeper has browser extensions for Chrome, Firefox, Edge, Safari, Brave, and Opera. It also offers native apps for iOS, Android, macOS, Windows, and web access.
SourceKeeper: Does Keeper support 2FA and passkeys?
Yes, Keeper stores and autofills FIDO2 passkeys and supports multiple 2FA methods including TOTP, SMS, and WebAuthn. Biometric login (fingerprint/face recognition) is also supported.
SourceKeeper: How secure is Keeper?
Keeper uses zero-knowledge architecture where data is encrypted and decrypted only on your device. Only you can access your vault, and the company cannot see your passwords or data.
Source