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Browser Extensions · head to head

LanguageTool vs Violentmonkey

LanguageTool logo

LanguageTool

Browser Extensions

Grammar and spell checker for 25+ languages

From
Free
Rated
-
Full reviewWebsite
Violentmonkey logo

Violentmonkey

Browser Extensions

Open source userscript manager

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: LanguageTool free tier limited to basic spelling and simple punctuation; advanced punctuation and style issues caught only on premium; Violentmonkey smaller script ecosystem compared to Tampermonkey which has larger user base and more available scripts
  • They diverge on capability: LanguageTool covers Multi-language support, Violentmonkey covers Userscript support.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which LanguageTool and Violentmonkey actually diverge.

Attributes where LanguageTool and Violentmonkey differ
AttributeLanguageToolViolentmonkey
Pricing modelfreemiumUnknown
PlatformsWeb editor, Windows desktop app, macOS desktop app, Chrome extension, Firefox extension, Edge extension, Safari extension, Opera extension, Google Docs, Microsoft Word, iOS appChrome, Firefox, Edge
Founded20032013

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 LanguageTool

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

Only in Violentmonkey

  • Userscript support
  • Clean interface
  • Cloud sync
  • Script editor

Both cover

  • Chrome support
  • Firefox support
  • Edge support
  • Opera support

What people use each for

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

LanguageTool

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

Violentmonkey

  • Run open-source userscripts to customize or automate web pagesnot LanguageTool
  • Import scripts compatible with Greasemonkey and Tampermonkey formatsnot LanguageTool
  • Sync scripts and settings across browsers via Dropbox, OneDrive, Google Drive, or WebDAVnot LanguageTool
  • Batch import/export scripts as zip filesnot LanguageTool

Where each one falls short

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

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

Violentmonkey

  • Smaller script ecosystem compared to Tampermonkey which has larger user base and more available scripts
  • Less marketing and visibility results in lower adoption compared to more widely-known alternatives
  • Community maintenance model means slower feature development compared to commercial alternatives

Pricing, plan by plan

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

Violentmonkey

Free

No published plan breakdown. See the Violentmonkey review.

Which should you pick?

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

Choose Violentmonkey if

  • You need userscript support.
  • You want to start without paying.
  • You work on Chrome, Firefox, Edge.
  • You also want clean interface.
Violentmonkey review

Questions people ask

Is LanguageTool or Violentmonkey better?
Neither clearly leads. LanguageTool starts at Free and Violentmonkey at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, LanguageTool or Violentmonkey?
LanguageTool starts at Free and Violentmonkey at Free.
Does LanguageTool or Violentmonkey run on more platforms?
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. Violentmonkey runs on Chrome, Firefox, Edge.
Can I use LanguageTool for free?
Both have a free tier, so you can try either at no cost before committing.
What is LanguageTool best used for?
LanguageTool is most often used for grammar and spelling correction across web and desktop, style and clarity improvements, multilingual writing assistance. Of those, grammar and spelling correction across web and desktop and style and clarity improvements are not what Violentmonkey is typically brought in for.
What can LanguageTool do that Violentmonkey cannot?
LanguageTool covers Multi-language support, Grammar checking, Style suggestions, Personal dictionary. Violentmonkey covers Userscript support, Clean interface, Cloud sync, Script editor. Both handle Chrome support, Firefox support, Edge support, Opera support.

Answered from the vendors’ own pages

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
Violentmonkey: Is Violentmonkey open-source?

Yes. Violentmonkey is fully open-source and available on GitHub, making it free to use and community-maintained unlike Tampermonkey which has a larger proprietary ecosystem.

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
Violentmonkey: What browsers does Violentmonkey support?

Violentmonkey works on browsers with WebExtensions support, including Chrome, Firefox, Edge, and other Chromium-based browsers.

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
Violentmonkey: How does Violentmonkey compare to Tampermonkey in performance?

Community benchmarks show Violentmonkey uses about 15 to 30 percent less RAM on Chrome compared to Tampermonkey when managing many open tabs.

Source
Violentmonkey: What is the current version of Violentmonkey?

Violentmonkey reached version 2.46.0 as of July 31, 2026, with active ongoing development and regular updates to the open-source project.

Source
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