Grammarly

Grammarly has grown from a spell checker into a full writing assistant, and in 2026 it is still the tool most people reach for when they want their writing checked everywhere they type.

Overview

Grammarly runs as a browser extension, desktop app, and mobile keyboard. It underlines errors and suggests fixes in real time, covering spelling, grammar, punctuation, clarity, and tone. GrammarlyGO adds generative features, so you can ask it to rewrite a paragraph, shorten an email, or draft a reply. Paid tiers add a plagiarism checker and, for businesses, a shared style guide that enforces terminology and tone across a team.

Strengths

Ubiquity is the main selling point. Grammarly follows you into Gmail, Slack, Google Docs, and most other places you write, which makes it far more useful than a checker you have to paste text into. The suggestions are generally accurate for standard business and academic English, and the tone detector is a genuinely helpful nudge before you send a message that reads more sharply than you intended.

The generative features are practical rather than flashy. Being able to say "make this more concise" inside an email draft and get a usable rewrite saves time. For non-native English writers, the clarity suggestions are especially valuable.

Considerations

The premium tier is pricey relative to simpler alternatives, and the free tier covers only the basics. Grammarly also has a habit of over-suggesting. It can push you toward bland, uniform phrasing and flag perfectly good stylistic choices, which frustrates experienced writers and anyone working on creative or deliberately informal text. Learning to ignore suggestions is part of using it well.

As with any tool that reads everything you type, privacy deserves a look. Check the data handling terms for your plan before enabling it in sensitive applications.

Bottom Line

For anyone who writes a lot in a professional setting, Grammarly is a sensible investment, and the free tier is a solid safety net for everyone else. Writers who want a lighter touch, or who mostly want paraphrasing rather than correction, should compare it with Wordtune and QuillBot.