As of the catalog pass of , this list holds 12 extensions, ordered by current audience and led by Grammarly: AI Writing Assistant and Grammar Checker App (40.0M users).
A grammar checker reads everything you type, in every text field, on every site. That is the job, so the useful questions are who makes it, how many people trust it and whether it keeps being updated. The list shows all three, newest numbers first.
Fix Grammar and Spellingryanfriedman301 · Productivity · Communication · published 2025-05-1130k users★ 4.8
Candidates are Chrome Web Store listings whose title names the job (“grammar”, “spell check”, “spelling”, “proofreading”, with at least 5 000 users and at least 50 ratings). We then add up to 6 listings the catalog judges to do the same job even though their title never says so, because ranking by who writes the keyword best is backwards. Everything is ordered by current audience, which our own crawler reads from the store up to 2 times a day. Ordering by audience is not a verdict on quality: how many people kept an extension is what we can observe, and how good it is for you is not. On this page it added nothing: everything the catalog judged close enough was already found by title.
In the store's categories
This list follows what people ask for; the store files the same extensions under its own categories:
Grammarly: AI Writing Assistant and Grammar Checker App 40.0M users
AI Grammar Checker & Paraphraser – LanguageTool 2.0M users
Wordtune: AI Paraphrasing and Grammar Tool 1.0M users
AI Grammar and Spell Checker by Ginger 500k users
Jetwriter AI: Reply Emails, Ask Page, Summarize, Fix Grammar, and More 500k users
JustDone: GPT-4o AI Writing Assistant & Grammar Checker 200k users
ProWritingAid: Grammar Checker & Paraphrasing Tool 200k users
Spell Checker for Chrome 100k users
Grammar Checker and AI tool - Correcto 70k users
Private Grammar Checker - Harper 60k users
Sapling Grammar Checker and Writing Assistant 60k users
Fix Grammar and Spelling 30k users