ProLexis

6.3easy start · #69of 88
in Grammar checkers

Free to practise onno
Free trialno
Well documentedyes
Runs where you workyes

Runs on api, Mac, Web, Windows. Paid plans from €20/mo.

ProLexis is ranked #69 of 88 in grammar checkers on The Geeks Club, made by ProLexis (Valbonne, France). It runs on API, macOS, Web, Windows. There is no free plan. A free trial is offered. Paid plans start at €20/mo.

ProLexis plans and pricing

All plans

ProLexis & Myriade €240/yr 240.00 € HT / an; 288.00 € TTC / an; annual renewal Correction and writing assistance for macOS · Correction and writing assistance for Windows prolexis.com · 21 Sept 2026

ProLexis & Myriade for Windows €240/yr 240.00 € HT / an - 288.00 € TTC / an; 12-month subscription, renewed annually Windows · one or more workstations (quantity selector) prolexis.com · 11 Oct 2026

ProLexis & Myriade for macOS €240/yr 240.00 € HT / an - 288.00 € TTC / an; 12-month subscription, renewed annually Macintosh · one or more workstations (quantity selector) prolexis.com · 11 Oct 2026

Compared on grammar checkers

Free plan: No
Browser extension: Yes
Desktop app: Yes
Style suggestions: Yes
Languages supported: 5

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The record

Purpose: ProLexis is a professional writing corrector that checks spelling, grammar, typography, meaning, and style.
Audience: The maker describes it as intended for professional writers, including press groups, publishers, journalists, printers, proofreaders, graphic artists, writers, academics, and scientists.
French spelling: The French spelling analyzer uses a dictionary with 703,000 word forms and accounts for Swiss, Belgian, and Quebec French.
English spelling: The English analyzer includes 580,000 word forms and lets users choose British or American vocabulary.
Typography: Users can adapt typographic rules to their writing and audience; included defaults draw on French, Swiss, US, UK, and Quebec reference guides.
Multilingual: ProLexis can recognize five languages present at the same time in a text.
Myriade: The included Myriade library offers French definitions, synonyms, antonyms, expressions, collocations, conjugations, and repetition detection, along with specialist dictionaries.
Integrations: The desktop product integrates directly with Word, OpenOffice Writer, LibreOffice Writer, Pages, Keynote, Adobe InDesign, Illustrator, InCopy, and QuarkXPress, among other listed applications.
Compatibility limit: On the listed Mac compatibility page, Word footnotes are not corrected and the web version of Microsoft 365 Business Basic is excluded.
Web service: ProLexis Web Service connects to CMS and writing tools over a network using SOAP, and can be deployed on an intranet or over the Internet.
Web integrations: The Web Service page lists standard plug-ins for CKEditor, FCKEditor, and TinyMCE, plus CMS integrations including Joomla, Drupal, and WordPress with Gutenberg.
Data and privacy: The maker says ProLexis & Myriade data are hosted in France, are not shared with third parties, and stored data are anonymized and inaccessible to people outside its linguistic analysis team.
Payment security: The maker says its payments are processed by Stripe, which it describes as PCI Service Provider Level 1 certified.
Trial and cancellation: The maker offers a free trial without stating its duration on the page, and says subscriptions can be cancelled at any time to stop renewal at the end of the paid period.
Price from: €20/mo

Where it ranks on The Geeks Club

Best Grammar Checkers in 2026#69 of 88

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Sources

prolexis.com· checked 11 Oct 2026
prolexis.com/la-societe-diagonal/· checked 11 Oct 2026
prolexis.com/compatibilite-mac-pl/· checked 11 Oct 2026
prolexis.com/web-services/· checked 11 Oct 2026
prolexis.com/support/· checked 11 Oct 2026
prolexis.com/boutique/· checked 21 Sept 2026