Browser Extensions · head to head
Keeper vs LanguageTool
Keeper
Browser Extensions
Protect your passwords and private information
- From
- Free
- Rated
- -
LanguageTool
Browser Extensions
Grammar and spell checker for 25+ languages
- From
- Free
- Rated
- -
The short version
- Each has a real cost: Keeper free tier is severely limited to 10 passwords on a single device; essentially a trial rather than a usable free version; LanguageTool free tier limited to basic spelling and simple punctuation; advanced punctuation and style issues caught only on premium
- They diverge on capability: Keeper covers Password management, LanguageTool covers Multi-language support.
Where they differ
Only the attributes on which Keeper and LanguageTool actually diverge.
| Attribute | Keeper | LanguageTool |
|---|---|---|
| Platforms | Chrome, Firefox, Edge, Safari, Brave, Opera, iOS, Android, macOS, Windows | Web editor, Windows desktop app, macOS desktop app, Chrome extension, Firefox extension, Edge extension, Safari extension, Opera extension, Google Docs, Microsoft Word, iOS app |
| Founded | 2011 | 2003 |
Identical on both: starting price (Free), pricing model (Unknown), free tier (Yes), user rating (Not yet rated), category (Browser Extensions).
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 Keeper
- Password management
- Zero-knowledge encryption
- Secure file storage
- BreachWatch
Only in LanguageTool
- Multi-language support
- Grammar checking
- Style suggestions
- Personal dictionary
Both cover
- Chrome support
- Firefox support
- Edge support
- Safari support
- Opera support
What people use each for
The jobs each tool is most often brought in to do.
Keeper
- Business and enterprise password management with zero-knowledge encryptionnot LanguageTool
- Privileged access management for admin and service accountsnot LanguageTool
- Secure remote access and privileged session recordingnot LanguageTool
- Application secrets management through Secrets Managernot LanguageTool
- Government deployments requiring FedRAMP Highnot LanguageTool
LanguageTool
- Grammar and spelling correction across web and desktopnot Keeper
- Style and clarity improvementsnot Keeper
- Multilingual writing assistancenot Keeper
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
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
LanguageTool
- Free tier limited to basic spelling and simple punctuation; advanced punctuation and style issues caught only on premium
- Picky Mode (advanced typography) unavailable on free plan
- Specific pricing not displayed on main page; requires navigation to purchase flow
Pricing, plan by plan
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
LanguageTool
FreeNo published plan breakdown. See the LanguageTool review.
Which should you pick?
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.
Choose LanguageTool if
- You need multi-language support.
- You want to start without paying.
- You work on Web editor, Windows desktop app, macOS desktop app, Chrome extension, Firefox extension, Edge extension, Safari extension, Opera extension, Google Docs, Microsoft Word, iOS app.
- You also want grammar checking.
Questions people ask
- Is Keeper or LanguageTool better?
- Neither clearly leads. Keeper starts at Free and LanguageTool at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Keeper or LanguageTool?
- Keeper starts at Free and LanguageTool at Free.
- Does Keeper or LanguageTool run on more platforms?
- Keeper runs on Chrome, Firefox, Edge, Safari, Brave, Opera, iOS, Android, macOS, Windows. LanguageTool runs on Web editor, Windows desktop app, macOS desktop app, Chrome extension, Firefox extension, Edge extension, Safari extension, Opera extension, Google Docs, Microsoft Word, iOS app.
- Can I use Keeper for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is Keeper best used for?
- Keeper is most often used for business and enterprise password management with zero-knowledge encryption, privileged access management for admin and service accounts, secure remote access and privileged session recording, application secrets management through secrets manager. Of those, business and enterprise password management with zero-knowledge encryption and privileged access management for admin and service accounts are not what LanguageTool is typically brought in for.
- What can Keeper do that LanguageTool cannot?
- Keeper covers Password management, Zero-knowledge encryption, Secure file storage, BreachWatch. LanguageTool covers Multi-language support, Grammar checking, Style suggestions, Personal dictionary. Both handle Chrome support, Firefox support, Edge support, Safari support.
Answered from the vendors’ own pages
Keeper: 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.
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.
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