Grammarly

What Grammarly does

Grammarly checks and rewrites text wherever you write, through a browser extension, desktop applications, mobile keyboards and integrations with common document and email tools. Beyond grammar and spelling it flags wordiness, unclear sentences, inconsistent tone and passive constructions, and offers full rewrites of a selected passage. Paid tiers add tone adjustment, style guides and terminology enforcement for teams, plagiarism detection, citation help and generative drafting from a short instruction. The company rebranded as Superhuman in late 2025 and now sells Grammarly alongside a workspace and mail product, though Grammarly itself continues unchanged for existing users. It suits professionals writing in a second language, students, and teams that want consistent house style across many writers. The limitation is judgement: suggestions are frequent and not always right, and accepting them uncritically flattens a distinctive voice into something safe and uniform.

How to use it

Create an account at grammarly.com and install the browser extension first, since that covers most writing surfaces immediately; desktop apps and the mobile keyboard follow if you need them. Suggestions appear inline as you type, with a sidebar grouping them by correctness, clarity, engagement and delivery. Work through correctness first and treat the style categories as optional, because that is where over-correction does damage. Set the goals panel for each document, choosing audience, formality and intent, as the tone of suggestions changes meaningfully with it. For teams, configure the style guide and brand tones once so everyone receives the same advice. Two common annoyances are worth pre-empting: the extension can conflict with rich text editors and code fields, so disable it per site where it misbehaves, and generative features consume a monthly allowance on lower tiers. Free accounts cover basic correctness only, which is enough for casual writing but not for tone or style work.

Best for

• proofreading
• business email
• tone consistency
• second-language writing
• team style guides

Strengths and limitations