Grammarly: what it does, who it is for and alternatives

Updated October 20, 2026 · By Robert Breen

Checks grammar, tone and clarity everywhere you write, and drafts or rewrites text with AI. Works in email, docs and the browser.

Official site: grammarly.com

What Grammarly does

Grammarly runs as a browser extension, a desktop app for Windows and Mac, and add-ins for Microsoft Office and Google Docs, so suggestions show up as you type. Business teams can upload a company style guide and set brand tones so everyone's writing stays consistent. Extra agents flag AI-written text and show how different readers might react to a draft.

Who Grammarly is for

• Sales reps
• Marketing coordinators
• Customer support agents
• HR managers

Key features

• Paragraph rewrites and tone suggestions for different audiences
• AI Detector and Humanizer agents
• Company style guide, brand tones and snippets for teams
• Plagiarism checker, translator and citation generator
• Works in Gmail, Outlook, Slack, Salesforce, Word and Google Docs

Privacy and data

Grammarly says it holds SOC 2 Type 2 and ISO 27001, 27017, 27018, 27701 and 42001, encrypts data in transit and at rest, and does not sell or monetize customer content. Source: Grammarly’s own page. Before you put client data in, check your company’s AI rules and the plan’s data settings.

Learn Grammarly free on Stepthrough

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Alternatives to Grammarly

Other AI writing tools in the directory. For a fuller comparison, see Grammarly alternatives.

• ProWritingAid Free plan
  Best for: Readability, repetition and pacing reports for long documents. A grammar checker and style editor with in-depth reports on readability, repetition and pacing.
• LanguageTool Free plan
  Best for: Grammar and style checks in more than 30 languages. A multilingual grammar and style checker that works in more than 30 languages. Browser and Office add-ins.
• Wordtune Free plan
  Best for: Rewrites that make sentences shorter, clearer or more formal. Suggests rewrites to make sentences shorter, clearer or more formal. Good for polishing emails and reports.
• QuillBot Free plan
  Best for: Paraphrasing, summaries and grammar checks. Paraphrases, summarizes and checks grammar so your writing reads clearly. Popular for rewording and tightening drafts.
• DeepL Free plan
  Best for: Document translation plus DeepL Write for polishing wording. AI translation for text and whole files that keeps a document's original formatting, images and fonts, plus DeepL Write to polish your wording. Glossaries keep key terms consistent.
• Writer Free trial
  Best for: Company style guides and brand voice applied to every output. An enterprise AI platform where teams use WRITER Agent, Playbooks and saved brand voices to research and draft on-brand work, and build their own AI agents in AI Studio.

All 32 AI writing tools

Frequently asked questions

What is Grammarly?

Checks grammar, tone and clarity everywhere you write, and drafts or rewrites text with AI. Works in email, docs and the browser. Grammarly runs as a browser extension, a desktop app for Windows and Mac, and add-ins for Microsoft Office and Google Docs, so suggestions show up as you type. Business teams can upload a company style guide and set brand tones so everyone's writing stays consistent. Extra agents flag AI-written text and show how different readers might react to a draft.

Who is Grammarly for?

Grammarly fits sales reps, marketing coordinators, customer support agents and HR managers, and other office teams with the same job to do.

Is Grammarly free?

Grammarly has a free plan; paid plans add more usage or features. Plans change often, so check the official pricing page before you commit.

What are some alternatives to Grammarly?

Other AI writing tools include ProWritingAid, LanguageTool, Wordtune, QuillBot and DeepL.

Is Grammarly safe for work data?

Grammarly says it holds SOC 2 Type 2 and ISO 27001, 27017, 27018, 27701 and 42001, encrypts data in transit and at rest, and does not sell or monetize customer content. Check your own company’s rules, and use a business plan with training turned off for client data.

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Checked against Grammarly’s official site on October 20, 2026: source 1, source 2, source 3. Spotted something out of date? Email rbreen@ynteractive.com. Listings are free; submit your AI tool.

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