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Head-to-head · Browser Extensions

LanguageTool vs Proton Pass

  • Updated Oct 2026
  • Both researched from official sources
  • 2 checks side by side
Higher score LanguageTool #4 in Browser Extensions 9.0/10 Free plan Free plan✓ 1 of 4 features Visit LanguageTool
Proton Pass #5 in Browser Extensions 8.9/10 Free plan · 14-day trial Free planFree trial✓ 1 of 4 features Visit Proton Pass

LanguageTool leads on 0 checks, Proton Pass on 0, and 2 are even. Who comes out ahead on the 2 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreLanguageTool · 9.0/10
  • Free planboth
  • Free trialonly Proton Pass

LanguageTool scores higher on our rubric for browser extensions: 9.0 against 8.9 out of 10; our editors rank them #4 and #5.

LanguageTool is the better fit for writing assistance across browsers and productivity apps. Proton Pass is the better fit for secure password and passkey management everywhere.

  • LanguageTool fits best

    Writing assistance across browsers and productivity apps

  • Proton Pass fits best

    Secure password and passkey management everywhere

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Side by side

Feature LanguageTool 9.0/10 Visit ↗ Proton Pass 8.9/10 Visit ↗
At a glance
Editor score 9.0 8.9
Ranking #4 in Browser Extensions #5 in Browser Extensions
Best for Writing assistance across browsers and productivity apps Secure password and passkey management everywhere
Pricing model Free plan + paid Free plan + paid
Starting price — —
Free plan ✓ ✓
Free trial — 14 days
Money-back guarantee 14 days 30 days
Deployment Cloud, Self-hosted, Desktop, Mobile, Browser extension Cloud, Desktop, Mobile, Browser extension
Platforms Web, Windows, macOS, iOS, Chrome extension Web, Windows, macOS, Linux, iOS, Android, Chrome extension
Support Email, Live chat, Docs Email, Phone, Docs
Compliance GDPR GDPR, HIPAA, ISO 27001, SSO/SAML, 2FA
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features LanguageTool 1/4 · Proton Pass 1/4
Open source ✓ ✓
Works offline Not checked yet Not checked yet
Mobile extension Not checked yet Not checked yet
Cross-device sync Not checked yet Not checked yet
Specs
Supported browsers Not checked yet Not checked yet
Our review
Pros
  • Works across major browsers, desktop and iOS apps, and writing integrations
  • Free access covers basic grammar, spelling, punctuation, and style checks
  • Premium adds paraphrasing, longer text fields, and personal style guides
  • Free plan includes unlimited logins and devices, plus passkey support
  • Apps and extensions span web, desktop, and mobile platforms
  • Paid plans add sharing, aliases, monitoring, and family or business controls
Cons
  • Premium prices can vary by region and currency
  • Premium text fields are capped at 150,000 characters
  • Team-specific tools such as shared guides require a Team subscription
  • Free plan limits hide-my-email aliases to 10
  • Passkeys cannot currently log into Proton Pass apps
  • Paid individual and business plan prices are not shown
Our verdict

LanguageTool helps writers check grammar, spelling, punctuation, style, tone, and word choice. It is suited to people who move between browsers, productivity software, and email, as well as teams that want shared writing resources. Its…

Read the review →

Proton Pass stores and autofills logins, notes, credit cards, and passkeys, with end-to-end encryption. It is aimed at individuals who want password management across browser extensions, web, desktop, and mobile, as well as families and…

Read the review →
  1. LanguageToolBrowser Extensions 9.0Free plan
  2. Proton PassBrowser Extensions 8.9Free plan · 14-day trial

Strengths and trade-offs

  • LanguageTool — where it wins

    • Works across major browsers, desktop and iOS apps, and writing integrations
    • Free access covers basic grammar, spelling, punctuation, and style checks
    • Premium adds paraphrasing, longer text fields, and personal style guides

    Where it doesn't

    • Premium prices can vary by region and currency
    • Premium text fields are capped at 150,000 characters
    • Team-specific tools such as shared guides require a Team subscription

  • Proton Pass — where it wins

    • Free plan includes unlimited logins and devices, plus passkey support
    • Apps and extensions span web, desktop, and mobile platforms
    • Paid plans add sharing, aliases, monitoring, and family or business controls

    Where it doesn't

    • Free plan limits hide-my-email aliases to 10
    • Passkeys cannot currently log into Proton Pass apps
    • Paid individual and business plan prices are not shown
  • LanguageTool9.0/10 · Free plan

    A flexible writing assistant for proofreading and refining text across browsers and productivity apps.

    Visit LanguageToolFull verdict →
  • Proton Pass8.9/10 · Free plan · 14-day trial

    A broad password manager with a capable free tier and sharing tools for individuals, families, and teams.

    Visit Proton PassFull verdict →

More comparisons

All browser extensions comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update