BonPatron

7.3easy start · #49of 88
in Grammar checkers

Free to practise onyes
Free trialyes
Well documentedyes
Runs where you workno

Runs on Web.

BonPatron is ranked #49 of 88 in grammar checkers on The Geeks Club, made by BonPatron. It runs on Web. There is a free plan. A free trial is offered.

BonPatron plans and pricing

All plans

BonPatron Pro Individual No advertising · Verb conjugator · Resizable and fullscreen editor · Text archiving · Error summary · Interactive grammar exercises pro.bonpatron.com · 20 Sept 2026

Free BonPatron Free No fee · free checker allows approximately 500 words per submission bonpatron.com · 11 Oct 2026

BonPatron Pro classroom $299 per classroom of up to 30 students Classroom license · site licenses for computer labs or self-registration groups available by contacting the company bonpatron.com · 11 Oct 2026

BonPatron Pro individual €1,299/yr one year license No advertising · no submission length restriction · text archive · grammar exercises · error summary · English-French dictionary and verb conjugator pro.bonpatron.com · 11 Oct 2026

Compared on grammar checkers

Free plan: Yes
Desktop app: No
Style suggestions: Yes
Languages supported: 1

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The record

Purpose: BonPatron is an online French writing tool that identifies spelling errors and common grammatical problems.
Audience: The site was initially designed for North American French-language learners and is also used by Francophones.
Learning approach: It flags errors and suggests corrections for the user to make, supporting a process-writing approach.
Error coverage: The company says its research suggests BonPatron catches approximately 82% of errors.
Detected errors: It identifies misspelled words, structures to verify, and structures to correct.
Limitations: BonPatron cannot evaluate the semantic acceptability of submitted text and may not flag one-time errors.
Language support: BonPatron checks French text only; the FAQ points to separate related tools for English and Spanish.
Integrations and tools: BonPatron Pro includes an English-French vocabulary tool and verb conjugator, and its subscription includes access to SpellCheckPlus Pro.
Privacy: The privacy notice says submitted texts are not stored by default, while subscribers can choose to keep a text archive.
Data handling: The privacy notice says the company does not store subscriber financial information on its servers and does not share collected data with third parties.
Support: Users can contact the company at [email protected] with privacy complaints or questions.
Company: The site identifies Nadaclair Language Technologies Inc. as the company behind BonPatron.
Founded: 2001

Where it ranks on The Geeks Club

Best Grammar Checkers in 2026#49 of 88

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Sources

pro.bonpatron.com· checked 11 Oct 2026
bonpatron.com/faq/· checked 11 Oct 2026
bonpatron.com/privacy/· checked 11 Oct 2026
bonpatron.com/en/· checked 28 Sept 2026
pro.bonpatron.com/en/· checked 20 Sept 2026
bonpatron.com/edu/· checked 11 Oct 2026