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LanguageTool

Grammar, style and spell checker for many languages

A multilingual grammar and style checker available as browser extension, desktop and office add-ins, with an open-source core.

Visit LanguageTool ↗

Pricing: Free plan

Platforms: Web, Mac, Windows, Browser extension, API

Categories: Writing

LanguageTool is an alternative to

Grammarly

LanguageTool compared with similar tools

Product	Price	Open source	Self-host	Platforms
LanguageTool	Free plan	Yes	–	Web, Mac, Windows, Browser extension, API
Hemingway Editor	Free plan	–	–	Web, Windows, Mac
ProWritingAid	Free plan	–	–	Web, Mac, Windows, Browser extension
Harper	Free	Yes	–	Browser extension, Mac, Windows, Linux, Web
Vimium	Free	Yes	–	Browser extension
LeechBlock NG	Free	Yes	–	Browser extension
2FAS	Free	Yes	–	iOS, Android, Browser extension

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Questions

Is LanguageTool free?

LanguageTool is free to start, with paid plans.

Is LanguageTool open source?

Yes, LanguageTool is open source.

What platforms does LanguageTool run on?

LanguageTool is available for Web, Mac, Windows, Browser extension, API.

What are some alternatives to LanguageTool?

Similar indie products include Hemingway Editor, ProWritingAid, Harper, Vimium and 4 more.

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