ProLexis
ProLexis: A deep French and English correction suite for publishing teams with a premium annual price. Ranked #54 of 88 in Grammar Checkers by our editors (3.3/10); pricing: 30-day trial; best for professional multilingual publishing teams.
At a glance
- Editor score3.3 / 10
- Pricing30-day trial
- Best forProfessional multilingual publishing teams
- Free planNo
- Paid from€240/device/yr
- Facts checked21 Sep 2026
Where it wins
- Deep French and English spelling, grammar, syntax and style analysis
- Typography rules, personal dictionaries and shared correction settings
- Integrations across office, publishing, CMS and editorial tools
Where it doesn't
- €240 per device per year is a significant recurring cost
- No free plan for ongoing use without a subscription
- The Chrome extension documentation focuses on Windows integration
Our verdict on ProLexis
ProLexis is professional writing-correction software from Diagonal for French-language professionals, frequent writers and publishing teams. It checks French and English spelling, syntax, grammar, semantics, style and typography. Its language recognition covers French, English, Spanish, German and Italian in one text, while correction focuses on French and English. Windows and macOS support, desktop applications and browser access make it suitable for teams working across editorial and office environments.
The strongest fit is for organisations that need more than basic spelling correction. ProLexis analyses homophones and paronyms in context, flags familiar words, pleonasms and imperfect phrasing, and supports configurable typography rules. Personal dictionaries and shared correction settings can help align editorial preferences across a team. The companion Myriade dictionaries add definitions, synonyms, antonyms, expressions and conjugation resources, giving writers additional language-reference tools alongside correction.
Its ecosystem is a major consideration for publishing workflows. Integrations include Microsoft Word, PowerPoint and Outlook; OpenOffice Writer, LibreOffice Writer and Thunderbird; and desktop-publishing applications such as Adobe InDesign, Illustrator, InCopy and QuarkXPress. Trados, Google Chrome, CKEditor, FCKEditor and TinyMCE are also supported, while WebService integration connects ProLexis with CMS and editorial tools. The ProLexis & Myriade plan costs €240 per device per year, billed annually, and a 30-day demonstration version is available. Choose it for professional multilingual publishing workflows that value detailed French correction and typography control. Writers seeking a lower-cost general checker may prefer a simpler alternative.
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ProLexis pricing
All 1 ProLexis plans and prices →
ProLexis fact sheet
| Free plan | No |
|---|---|
| Paid from | €240/device/yr |
| Browser extension | Yes |
| Desktop app | Yes |
| Mobile app | Not verified |
| Style suggestions | Yes |
| Tone detection | Not verified |
| Languages supported | 5 |
| Free trial | 30 days |
| Deployment | Cloud, Self-hosted, Desktop, Browser extension |
| Platforms | Web, Windows, macOS, Chrome extension |
| Support | Email, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 18 integrations: Microsoft Word, Microsoft PowerPoint, Microsoft Outlook, OpenOffice Writer, LibreOffice Writer, Thunderbird … See all → |
| Pricing | 30-day trial (source) |
| Website | prolexis.com |
| Facts checked | 21 Sep 2026 |
ProLexis integrations
ProLexis lists 18 integrations on its own site.
- Microsoft Word
- Microsoft PowerPoint
- Microsoft Outlook
- OpenOffice Writer
- LibreOffice Writer
- Thunderbird
- Adobe InDesign
- Adobe Illustrator
- Adobe InCopy
- QuarkXPress
- Trados
- Google Chrome
- CKEditor
- FCKEditor
- TinyMCE
- Joomla
- Drupal
- WordPress Gutenberg
See all ProLexis integrations →
Alternatives to ProLexis
- GrammarlyA broad writing assistant with strong grammar, tone, rewriting, and AI coverage.9.4
- LanguageToolA broad multilingual checker with open-source and self-hosting options.9.2
- Microsoft EditorA strong Microsoft 365 writing assistant with focused platform coverage.9.0
See all ProLexis alternatives →
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The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used ProLexis for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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