Grammarly

Grammarly is an AI writing assistant built to help turn a rough draft into writing that's "clear, credible, and impossible to ignore," as the company puts it. It started as a grammar and spell-checking tool and has since expanded into a broader AI writing platform that also generates and rewrites text, not just corrects it. Who it's for: an unusually wide range of users — individual writers on free or paid personal plans, students and educational institutions, and teams and businesses on Pro or Enterprise plans across functions like marketing, sales, customer support, HR, and IT. Because it works as a browser extension and integrates into many places people already write (email, documents, social media, forms), it fits into an existing workflow rather than requiring a switch to a new app. Strengths: strong core grammar, spelling, and tone-detection capabilities that remain useful even on the free plan, paragraph rewriting and AI text generation for going beyond simple corrections, plagiarism detection and AI-generated-content detection, an "AI humanizer" for adding personality back into AI-assisted writing, citation generation, brand style guide compliance for teams, and reader-reaction analysis to gauge how a piece of writing is likely to land. Weaknesses and limitations: Grammarly's own site doesn't state explicit product limitations, but the free plan caps AI-generation prompts at 100, and the more advanced writing features — sentence rewrites, tone adjustment, brand compliance, and a much larger 2,000-prompt allowance — sit behind the Pro plan (around €12/month billed annually, or €30/month billed monthly). Enterprise features like unlimited members and unlimited AI prompts require contacting sales rather than a self-serve signup. Real-world scenarios: catching grammar and clarity issues before sending an important email, adjusting tone for a specific audience (more formal for a client, more casual for a team chat), rewriting an awkward paragraph without starting from scratch, checking a document for plagiarism before submission, and keeping a team's writing consistent with a shared brand voice. For teams that want an assistant embedded specifically in a writing-heavy workflow like this, Grammarly's closest comparisons are general writing assistants like Jasper (for marketing-specific content) rather than a general-purpose chatbot.