Side by side
Harper vs LanguageTool
Both stand on grammar checkers. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan Open source AndroidAPIExtension+5
Harper offers free writing checks across web and desktop platforms, with style suggestions also available. Its listed language coverage is one language.
Visit Harper
Free plan ExtensioniPhoneMac+1
LanguageTool covers writing checks and paraphrasing across several work contexts, with additional team controls. Compare the free character limit with your writing needs, since Premium prices are not listed.
Visit LanguageToolThe facts
| Harper | LanguageTool | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Yes | Not published |
| Runs on | Android, API, Extension, iPhone, Linux, Mac, Web, Windows | Extension, iPhone, Mac, Windows |
| Lowest paid plan | Free or on request | Free or on request |
| Plans published | 2 | 18 |
| Maker | Not published | LanguageTool |
| Website | writewithharper.com | languagetool.org |
| On grammar checkers | #1 of 88 | #3 of 88 |
Harper: what it does well
- Grammar and spelling checking is included in the free plan
- Style suggestions are available
- Desktop apps support Windows, macOS, and Linux
- Local processing is specified in the plan
What to know first
- Supports one language
- Listed plan describes grammar and spelling checking
LanguageTool: what it does well
- Supports 31 languages
- Checks grammar, spelling, punctuation, casing, and style
- Paraphrasing offers four writing modes
- Integrates with major word processors and email services
- Teams can share style guides and dictionaries
What to know first
- Free text fields are limited to 2,000 characters
- Premium text fields allow up to 150,000 characters
- Premium plan prices are not listed
Alternatives to Harper Alternatives to LanguageTool The whole list