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Browser Extensions · head to head

Arc vs LanguageTool

Arc logo

Arc

Browser Extensions

Chromium-based browser organized around user workflows

From
Free
Rated
-
Full reviewWebsite
LanguageTool logo

LanguageTool

Browser Extensions

Grammar and spell checker for 25+ languages

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Arc no longer receiving active feature development as of May 2025, entering maintenance mode; LanguageTool free tier limited to basic spelling and simple punctuation; advanced punctuation and style issues caught only on premium
  • They diverge on capability: Arc covers Spaces and Profiles, LanguageTool covers Multi-language support.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Arc and LanguageTool actually diverge.

Attributes where Arc and LanguageTool differ
AttributeArcLanguageTool
Pricing modelFreefreemium
PlatformsmacOS, Windows, iOSWeb editor, Windows desktop app, macOS desktop app, Chrome extension, Firefox extension, Edge extension, Safari extension, Opera extension, Google Docs, Microsoft Word, iOS app
FoundedUnknown2003

Identical on both: starting price (Free), 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 Arc

  • Spaces and Profiles
  • Split View
  • Themes
  • Privacy-First Design
  • Chromium Updates

Only in LanguageTool

  • Multi-language support
  • Grammar checking
  • Style suggestions
  • Personal dictionary
  • Chrome support
  • Firefox support
  • Edge support
  • Safari support

What people use each for

The jobs each tool is most often brought in to do.

Arc

  • Organizing work across multiple projects within one browsernot LanguageTool
  • Separating personal and professional browsing with spacesnot LanguageTool
  • Privacy-conscious web browsing without trackingnot LanguageTool
  • Tab and window management for productivitynot LanguageTool

LanguageTool

  • Grammar and spelling correction across web and desktopnot Arc
  • Style and clarity improvementsnot Arc
  • Multilingual writing assistancenot Arc

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Arc

  • No longer receiving active feature development as of May 2025, entering maintenance mode
  • Limited cross-platform availability compared to mainstream browsers
  • Smaller ecosystem of extensions compared to Chrome
  • Focused on macOS and Windows, with limited iOS support

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

Arc

Free
  • ArcFree
    • Spaces and profiles organization
    • Split view customization
    • Themes and personalization

LanguageTool

Free
  • BasicFree
    • 2,000 character limit per text
    • 3 AI paraphrasing requests per day
    • Basic grammar and spelling checks
  • Premium$null/month
    • 150,000 character limit per text
    • Unlimited AI paraphrasing
    • 20,000+ grammar and style checks
  • Teams$null/month
    • Per-user, per-month pricing
    • 2-1000+ users
    • Team Style Guide

Which should you pick?

Choose Arc if

  • You need spaces and profiles.
  • You want to start without paying.
  • You work on macOS, Windows, iOS.
  • You also want split view.
Arc review

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.
LanguageTool review

Questions people ask

Is Arc or LanguageTool better?
Neither clearly leads. Arc 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, Arc or LanguageTool?
Arc starts at Free and LanguageTool at Free.
Does Arc or LanguageTool run on more platforms?
Arc runs on macOS, Windows, iOS. 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 Arc for free?
Both have a free tier, so you can try either at no cost before committing.
What is Arc best used for?
Arc is most often used for organizing work across multiple projects within one browser, separating personal and professional browsing with spaces, privacy-conscious web browsing without tracking, tab and window management for productivity. Of those, organizing work across multiple projects within one browser and separating personal and professional browsing with spaces are not what LanguageTool is typically brought in for.
What can Arc do that LanguageTool cannot?
Arc covers Spaces and Profiles, Split View, Themes, Privacy-First Design. LanguageTool covers Multi-language support, Grammar checking, Style suggestions, Personal dictionary.

Answered from the vendors’ own pages

Arc: Does Arc Browser cost anything to use?

Arc is completely free to download and use with no subscription required. All features are available at no cost.

Source
LanguageTool: Does LanguageTool have a free version?

Yes, LanguageTool Basic is free with a 2,000 character limit per text field and 3 AI paraphrasing requests per day for basic grammar and spelling checks.

Source
Arc: What operating systems does Arc support?

Arc is available on macOS, Windows, and iOS. Windows and mobile versions are available for download.

Source
LanguageTool: What does LanguageTool Premium offer?

LanguageTool Premium increases the character limit to 150,000 per text field, provides unlimited AI paraphrasing, and includes 20,000+ advanced grammar and style checks. Multiple billing options are available including monthly, quarterly, annual, and 2-year plans.

Source
Arc: Will Arc continue to receive new features?

As of May 2025, Arc entered maintenance mode with no new features planned. The Browser Company's focus has shifted to Dia browser, though Arc continues to receive security updates.

Source
LanguageTool: Does LanguageTool offer a money-back guarantee?

Yes, LanguageTool provides a 14-day money-back guarantee on all Premium packages with no period of notice required; cancel anytime.

Source
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