Grammarly
Correct spelling, grammar and tone in real-time across all your tools, with AI rewriting
Overview
Grammarly is the world's most-used writing assistant: a browser extension and desktop apps that correct spelling, grammar, punctuation and style in real-time in almost every text field (emails, Word, Google Docs, LinkedIn, Slack). Beyond correction, the tool adjusts message tone, detects clarity and offers complete sentence or paragraph rewrites via generative AI. The free plan covers basic corrections; the Pro plan (€12/month billed annually, roughly $30/month without commitment) unlocks advanced rewriting and 2,000 monthly AI prompts; a Business plan exists on request for teams with brand control and enhanced security.
Grammarly remains fundamentally built for English: its grammar correction engine, tone suggestions and AI rewriting work only on English text, with no French support. For a French-speaking SME or freelancer, use only makes sense for English correspondence (emails to international clients, applications, export marketing content). Integrations are numerous and well-managed for browser and Office suite, but no public API is offered to third-party developers.
Our verdict
Recommended for French-speaking freelancers and SMEs who regularly write in English (international clients, export, applications) and want reliable orthographic and stylistic safety net. Not suitable if your need is French writing: Grammarly doesn't correct that language; use a dedicated tool like LanguageTool instead.