26 Best Grammar Checker Tools

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Table of Contents

If you write or publish any type of content, from books to blogs, or even emails, you should be using a grammar checker.

Let’s break down what a good grammar checker should do and how some of the most popular options compare to each other.

But with the endless options available, how can you choose the best grammar checker for you or your business?

What Are the Main Benefits of Grammar Checker Tools?

Learn to use the best grammar checker tools to improve your writing.

Modern grammar checkers can do a lot.

Their main feature sets are aimed at helping you:

  • Get better at writing
    The best grammar checkers will give you an explanation about all grammar or punctuation errors. Over time, you will learn common grammar rules for yourself and make fewer mistakes.
  • Write in the correct style
    Grammar check software analyzes your writing style helps you write consistently and deliver your message the right way. Writing style features help improve the way you communicate by matching your words to your intentions.
  • Improve engagement with your writing
    Some grammar checkers can analyze how engaging your content is and provide suggestions on improving it. This usually involves sentence structure changes like reducing your passive tense sentences, writing shorter paragraphs and sentences, and using more engaging language.
  • Avoid embarrassing mistakes
    Grammar checkers, especially those that auto-correct spelling errors, are a great final checker tool to help you avoid sending the wrong messages. Tools that have a browser extension are ideal for this since they operate in real-time on your emails, social media, your website, etc.
  • Make corrections everywhere
    It’s most helpful to you if you can use your grammar checking tool wherever you need it. This means checking for grammar, spelling, and punctuation errors in word processors, emails, and documents online and offline. Look for software that works where you do. Common compatibility options include Microsoft Word add-ons, Edge and Chrome extensions, Safari add-ons, desktop apps, and online grammar checker tools.

Best Grammar Checker Tools

There are a ton of different grammar checker tools that have their own strengths and weaknesses.

Here’s an overview of some of the best grammar checkers on the market and what they might work best for.

Grammarly- Best Real-Time Grammar Checker

This is Grammarly best grammar checker tool for writing.

A powerful grammar checker that lets you do everything from spell checking to analyzing how engaging your content is for readers.

Real-time grammar checking with a wide range of integrations.

Compatibility

  • Desktop app
  • Windows 7 or higher, MacOS 10.13 or higher

Add-ons

  • Microsoft Word

Browser

  • All Chromium browsers (Chrome, Edge, Brave, Opera, etc.), Firefox, and Safari

Free Features

  • Spell checking
  • Basic grammar checking
  • Punctuation checker tool

Additional Paid Features on Grammarly Premium

  • Writing tone analysis and suggestions
  • Writing engagement suggestions
  • Content format suggestions
  • Context analysis and suggestions
  • Plagiarism detection
  • Concise writing suggestions
  • Real-time grammar checking through browser extensions, app
  • Integrations with top word processors (Word, Docs, and more)
  • Grammarly keyboard for real-time writing edits

Pros

  • Makes mostly good suggestions, especially context-related words
  • Explanations for suggested changes
  • Add unique words to your dictionary to avoid constant corrections
  • Use online and offline
  • Easy to use
  • Simplify your writing
  • Special packages available for educational institutions

Cons

  • Real-time grammar plug-in may cause some lag in certain programs
  • Not ideal for technical language
  • The free version is limited
  • Only supports English

Pricing

Subscription service.

Free version available.

Grammarly Premium Individual Plan

  • Monthly – $30/month
  • Quarterly – $60/3 months, paid upfront
  • Annual – $144/year, paid at once

Grammarly Premium Business Plan (billed per member)

  • 3-9 members – $12.50/month
  • 10-49 – $12.08/month
  • 50-149 – $11.67/month

Language Tool – Best Grammar Checker for Multiple Devices

This is Language Tool grammar checker.

An open-source program that offers a good baseline free version with some enhanced features in the premium app.

Wide device compatibility, so you can use it pretty much anywhere.

Compatibility

  • Browser Extension
  • Chrome, Edge, Firefox, Safari, Opera

Add-ons

  • OpenOffice, LibreOffice, Gmail, Thunderbird. Premium only: Google Docs, Microsoft Word 2016 or later

Desktop App

  • Windows, MacOS

Free Features

  • Spell checking
  • Basic grammar analysis and suggestions
  • Integrations for LibreOffice, Word, and Docs
  • 30+ supported languages, with automatic language detection
  • Punctuation checking
  • Add words to your personal dictionary

Additional Paid Features

  • Correct up to 100,000 characters per text field
  • Enhanced grammar checking, especially in languages other than English
  • Number error detection (ISBN, IBAN, etc.)
  • Tone and style suggestions
  • Name and title error detection (email only)

Pros

  • No need to make an account to use a browser extension
  • Works offline
  • Easy to use, intuitive interface

Cons

  • Grammar checking in languages other than English is not always thorough
  • Slow to release updates
  • Lacking integrations with some Google Suite products

Pricing

Subscription.

Free version available.

Individual

  • Monthly – from $9.50/month
  • Quarterly (3 months) – from $19.50
  • Yearly – from $29.95
  • Every 2 Years – from $49.50

Team

  • Billed per user – from $23.96/year

WhiteSmoke – Best Cross-Platform Grammar Checker

This is White Smoke grammar checker tool.

Although there’s no free version, WhiteSmoke is an affordable option that works on many different types of devices.

Compatibility

  • Web Version
  • All browsers

Desktop app

  • Windows 7 or later, MacOS 10.12 or later

Add-ons

  • Office products, Gmail

Mobile Version

  • All iOS and Android devices

Web-only Features

  • Plagiarism checker
  • Translator
  • Basic grammar error detection
  • Spell checking
  • Punctuation checker

Premium Features

  • Integrations with word processors
  • One-click proofreading

Business Features

  • Phone customer support
  • 3 licenses per plan

Pros

  • Wide language translation support (55+ languages)
  • Helpful writing tutorials
  • Simple content scoring card for contentWeb, desktop, and mobile applications
  • Convenient grammar checker app for multiple platforms

Cons

  • Plagiarism checking works via tokens which must be renewed at a cost
  • Premium package only gives a license for 1 computer
  • Limited style and tone suggestions
  • Only 10,000 characters for each grammar review

Pricing

Subscription.

Web Package

  • Annual – $59.95/year
  • 3-year – $124.95/3 years

Premium Package

  • Annual – $79.95/year
  • 3-year – $199.95/3 years

Business Package

  • Annual – $137.95/year
  • 3-year – $317.50/3 years

Ginger Grammar Checker – Best Grammar Checker for User-Friendly Interface

This is GINGER grammar checker tool.

Easy to use grammar checker that makes it simple for students to check assignments before submitting them, or for anyone to run a quick check on an email before sending it.

Use online or download the grammar checker app for desktop or mobile.

Compatibility

  • Browsers
  • All browsers (web version)

Extensions

  • Chrome

Add-ons

  • Microsoft Word, Outlook

Mobile Apps

  • iOS, Android devices

Desktop App

  • Windows

Free Features

  • Spell checker
  • Basic grammar analysis and suggestions
  • Multi-error correction
  • Contextual grammar analysis

Additional Paid Features

  • Rephrasing suggestions
  • Synonym suggestions
  • Translation to 40+ languages
  • Removal of web grammar checker character limit

Pros

  • Simple to use, effective writing assistant
  • Good for students writing assignments, or for emails
  • Suggestions can help you write more professionally

Cons

  • Free online grammar checker has a very small character limit and other feature limits
  • Smaller range of compatible devices, no MacOS or Google Docs version
  • No in-depth text analysis for readability or other statistics

Pricing

Subscription.

Free version available.

  • Monthly – from $13.99/month
  • Annual – from $89.88/year
  • 2 Year – from $167.76/2 years

Hemingway Editor – Best Grammar Checker for Checking Passive Tense

This is Hemingway Editor grammar checker tool.

An effective stylistic writing aid, this writing assistant is a good option if you’re looking to improve the tone, voice, and engagement of your writing.

Compatibility

  • Web Version (Hemingway Editor)
  • All browsers

Desktop App

  • Windows, MacOS

Key Features

  • Spell checking
  • Passive voice detection
  • Concise writing suggestions
  • Import/export to and from popular word processors
  • Publish directly to WordPress or Medium
  • Readability suggestions
  • Common grammar error corrections
  • Formatting suggestions

Pros

  • Color-coded suggestions make it easy to edit grammar mistakes quickly
  • Hemingway Editor can work offline
  • No subscription required
  • Easy to publish to many common websites

Cons

  • English language only
  • Email customer service only
  • Mostly focused on style and readability, only basic grammar correction

Pricing

One-time payment.

  • Free version available.
  • Desktop version – from $19.99 one-time payment

ProWritingAid – Best for Writing Analytics Reports

This is ProWritingAid grammar checker tool.

With a limited free plan and more advanced premium option, this is a good tool when you want detailed reports about your writing.

You can keep track of your writing skill progress over time for comparison.

Compatibility

  • Web Version
  • All browsers

Browser Extension

  • Chrome, Safari, Firefox, Edge

Add-ons (Premium only)

  • Microsoft Word, Outlook, Google Docs, Open Office, Scrivener

Desktop App (Premium only)

  • Windows, MacOS

Free Features

  • Spell checking
  • Basic grammar analysis
  • 19 reports about your writing are available
  • Writing clarity analysis and suggestions (overused words, repetitive writing, etc.)
  • Punctuation suggestions
  • Readability analysis

Additional Paid Features

  • Removal of word count limits (free version is limited to 500 words per report)
  • Unlimited writing reports
  • Writer’s resource library
  • Full grammar and writing style reports
  • Custom style guide creation
  • Contextual suggestions

Pros

  • Simple analytics interface for writing reports and statistics
  • Resource library helps you learn and improve your writing
  • Upload your own custom style guide to analyze writing
  • Many useful integrations
  • Easy to learn to use quickly

Cons

  • No plagiarism detector without an additional premium add-on
  • Lack of mobile app
  • Sentence structure alternatives are not always correct
  • Sometimes difficult to use for longer documents

Pricing

Subscription or one-time payment.

Free version available.

  • Monthly – $20/month
  • Annual – $79/year
  • Lifetime – $399 one-time payment. All future updates included.

Grammar Slammer – Best Low-Cost Grammar Checker

This is Grammar Slammer grammar checker tool.

Created by an English teacher, this is a useful tool for learning more about correct grammar to improve your writing over time.

With a basic set of features and a useful library of educational materials, it’s ideal for students and others seeking to improve the quality of their writing.

Compatibility

  • Web Editor
  • All browsers

Add-ons

  • Microsoft Word

Key Features

  • Spell checking
  • Basic grammar suggestions
  • One-click corrections
  • The explanation for corrections + learning resources

Pros

  • Low cost compared to other options
  • Boost your basic spell check
  • Access to a useful library of learning resources to prevent future grammatical errors

Cons

  • Customer support is limited to email only
  • Outdated interface
  • Limited integrations and compatibility

Pricing

One-time payment.

  • Grammar Slammer – $25
  • Grammar Slammer Deluxe – $39
  • Grammar Slammer Deluxe + Checkers – $49

Reverso Context – Best Grammar Checker for Translation

This is Reverso Context grammar checker tool.

Translate text and then correct errors in the same place to make your content more natural and readable in many different languages.

Compatibility

  • Web Version
  • All browsers

Mobile App

  • iOS, Android

Key Features

  • Neural machine translation (NMT) for 14+ languages
  • Spell checking
  • Punctuation corrections
  • Basic grammar suggestions
  • Word change suggestions from built-in thesaurus and dictionary
  • Passive voice analysis
  • Grammar correction explanations

Pros

  • The translation follows a contextual model that’s generally more accurate
  • Improve the readability of translated text content
  • No ads in the premium app
  • Explanations about grammatical changes or word suggestions help you improve your writing skills

Cons

  • Grammar checking limited to English and French
  • Limited to 2000 characters per section

Pricing

Subscription.

Free version available.

Premium

  • Monthly – $10.99/month
  • Annual – $71.88/year

Linguix – Best AI Writing Assistant

This is LINGUIX grammar checker tool for professional writing.

Quick editing suggestions and useful team features make this program a good option for remote teams or individuals looking to track their writing improvements over time.

Compatibility

  • Web Version
  • All browsers

Desktop App

  • Windows, MacOS

Browser Extension

  • Firefox, Safari, Edge, and Chrome extension

Mobile App

  • iOS, Android

Add-ons

  • Microsoft Word, Outlook

Free Features

  • Spell checking
  • Basic grammar checking and suggestions
  • Punctuation suggestions

Additional Paid Features

  • Context-based grammar suggestions
  • Real-time suggestions
  • Language and grammar training
  • Custom writing shortcuts
  • Native language paraphrasing suggestions
  • Writing reports and statistics tracking for teams
  • Synonym suggestions
  • Advanced grammar analysis and suggestions
  • Private mode – writing is not saved or stored after you finish

Pros

  • A simple, intuitive interface has a short learning curve
  • Get language training based on your most common writing mistakes
  • Native language suggestions make your writing more readable
  • Highly compatible

Cons

  • No plagiarism checking
  • Often suggests corrections for proper nouns (i.e. names)
  • The desktop app can be glitchy

Pricing

Subscription.

Free version available.

  • Premium, monthly – $18.95/month
  • Premium, annual – $96/year
  • Team – $10/month per member

PaperRater – Best Grammar Checker for Students

This is Paper Rater grammar checker tool.

Used for years by students around the world, this grammar checker software gives comprehensive grammar corrections with an option to check for plagiarism for free a few times per month.

Compatibility

  • Web Editor
  • All browsers

Desktop App

  • Windows, MacOS

Free Features

  • Spell checking
  • Basic grammar suggestions
  • Writing style suggestions
  • Alternative word suggestions
  • Essay writing score
  • Contextual grammar checking software
  • Vocabulary scoring

Additional Paid Features

  • Writing reports and statistics
  • Plagiarism checking
  • Import files from word processors
  • Near real-time suggestions
  • Ad-free usage
  • Readability reports

Pros

  • Robust free grammar checker
  • Great for beginners – scalable as your content needs grow
  • Scans documents quickly for feedback
  • Writing reports are thorough and useful for improving your writing

Cons

  • Limited monthly use, even in the paid version
  • Mainly web-based product requiring internet access
  • The free version features ads and upselling
  • No mobile app

Pricing

Subscription.

Free version available.

  • Premium, monthly – from $11.21/month
  • Premium, annual – from $71.55/year

Scribens – Best Free Grammar Checker

This is Scibens grammar checker tool.

A free tool that can give you another layer of checking before you submit assignments, send emails or publish content.

Features are limited, but there are no upselling or ads.

Compatibility

  • Web Editor
  • All browsers

Browser Extensions

  • Chrome, Firefox, Safari

Add-ons

  • Microsoft Word, Excel, LibreOffice, OpenOffice, Google Docs, Google Sheets, Thunderbird

Key Features

  • Spell checking
  • Clarity suggestions
  • Content statistics while editing
  • Readability score

Pros

  • Use without creating an account or installing anything
  • Simple interface
  • No word or character limits for the free version

Cons

  • Grammar checker can sometimes miss context errors
  • Punctuation checker misses many mistakes
  • No plagiarism checker is available

Pricing

  • Free.

Spell Check Plus – Best Cheap Online Grammar Checker

This is Spell Check Plus grammar checker tool.

A simple grammar checker with basic features and a web editing interface.

Helps you detect spelling mistakes and English grammar errors.

Compatibility

  • Web Editor
  • All browsers

Free Features

  • Spell checking
  • Native speaker mode
  • Basic grammar checking
  • Punctuation checking
  • Error type categorization
  • Word change suggestions from a thesaurus

Additional Paid Features

  • Removal of ads
  • Private mode (no text logging)
  • Grammar training exercises
  • Error summary report
  • Archived texts

Pros

  • French and Spanish versions are available as well
  • Ideal for ESL writers who need to double-check their English grammar
  • Errors are color-coded for easy corrections

Cons

  • Basic tool with limited features
  • Outdated interface
  • Web-only access, no offline version

Pricing

Subscription

  • Annual – $14.99/year

Virtual Writing Tutor – Best Grammar Checker for ESL Writers

This is Virtual Writing Tutor grammar checker tool.

Created for language students and ESL students, this is a useful tool for checking essays and other academic papers.

Compatibility

  • Web Editor
  • All browsers

Key Features

  • Vocabulary analysis and suggestions
  • Essay format checking
  • Word counting
  • Basic grammar suggestions
  • Spell checking
  • Punctuation suggestions
  • Grammar learning courses
  • Academic vocabulary suggestions
  • Paraphrase checking

Pros

  • Ideal for ESL writers
  • Embed this grammar checker directly into your website
  • Built with students and language learners in mind

Cons

  • Simplistic, without a lot of advanced features
  • Each type of checking requires pressing a different button on the tool

Pricing

  • Free.

AutoCrit – Best Grammar Checker for Book Writers

This is Autocrit grammar checker tool.

Built for book writers, this tool is good for checking manuscripts to get insight on more than just the grammatical mistakes.

Compatibility

  • Web Editor
  • All browsers

Free Features

  • Spell checking
  • Basic grammar suggestions
  • Word padding analysis
  • Dialogue tag overuse detection
  • Pacing analysis
  • Passive voice analysis and suggestions
  • Sentence length analysis
  • Word change suggestions

Additional Paid Features

  • Interactive editing reports
  • Genre-based contextual analysis
  • Customized reports
  • Autocrat summary score
  • Learning courses

Pros

  • Ideal for novelists
  • Great for fine-tuning your writing style to match your genre better
  • Reduce word repetition
  • Chapter by chapter editing

Cons

  • Not ideal for online content creators
  • Web editor doesn’t work on a mobile device
  • Formatting compatibility issues
  • Grammar checker software doesn’t catch some common issues

Pricing

Subscription.

Free option available.

Professional

  • Monthly – $30/month
  • Annual – $297/year

Slick Write – Best Online Grammar Checker for Long Content

This is SLICK WRITE best grammar checker tool for teams.

A free grammar checker with an online interface that allows you to check large pieces of content instead of having to break it up into different chunks.

Compatibility

  • Web Editor
  • All browsers

Browser Extension

  • Chrome, Firefox

Key Features

  • Basic grammar suggestions
  • Spell checking
  • Writing style analysis
  • Built-in dictionary and thesaurus word checks
  • Writing reports and statistics tracking

Pros

  • Adjust your suggestions and corrections for individual projects
  • Get a look at your overall content stats in the report
  • Works quickly

Cons

  • The very basic interface that’s a little hard to use
  • 30,000 word limit per check
  • No offline options

Pricing

  • Free.

Writefull – Best Grammar Checker for Scientific Writing

This is Writefull grammar checker tool.

This is a tool made specifically with research and scientific writing in mind.

It taps into a large database of journals to create suggestions for words, grammar, punctuation, and other changes.

Compatibility

  • Microsoft Word, Overleaf

Free Features

  • Spell checking
  • Basic grammar suggestions
  • Punctuation suggestions

Additional Paid Features

  • Title generator
  • Paraphraser
  • Unlimited access to all features

Pros

  • Focused on research writing
  • Ideal for students and researchers looking to publish

Cons

  • The limited application for content creators
  • The free plan does not provide unlimited access

Pricing

Subscription.

Free version available.

  • Monthly – $15.37/month
  • Quarterly – $35.43/3 months
  • Yearly – $65.52/year

Online Correction – Best Paragraph Checker

This is Online Correction grammar checker tool.

Simple tool with a free, web-only interface.

Detects grammar issues for you to fix quickly.

Compatibility

  • Web Editor
  • All browsers

Key Features

  • Spell checking
  • Basic grammar suggestions
  • Sentence structure suggestions
  • Alternate vocabulary suggestions
  • Auto corrections
  • Writing style suggestions

Pros

  • Simple UI
  • Ideal for short snippets of text
  • Versions available for 8 languages

Cons

  • Limited word count per edit
  • No explanations for grammatical changes

Pricing

  • Free.

Druide Antidote – Best French Grammar Checker

This is Druide Antidote grammar checker tool.

If you regularly write in both English and French, this tool offers a good solution for editing in both languages.

Compatibility

  • Web Editor
  • All browsers

Mobile App

  • iOS 13.0 or later, iPadOS 13.0 or later

Add-ons

  • Microsoft Word, PowerPoint, Outlook, Apple Mail, Excel, Gmail, Google Docs, MS Teams, Slack

Key Features

  • Customizable dictionary
  • Grammar corrector
  • Repetitive writing analysis
  • Explanations for grammar corrections
  • Writing style suggestions

Pros

  • Works in both English and French
  • Ideal for French editing

Cons

  • English editor is less robust than some other service
  • No grammar checker software in the free app

Pricing

Subscription.

Free option available.

Mobile-only – Free.

  • Antidote+ Personal – $59.95/year
  • Antidote+ Family – $99.95/year
  • Antidote 11 – $129.95 one-time payment (no future updates included)

Outwrite (Formerly Grade Proof) – Best Tool for Checking Readability

This is Outwrite grammar checker tool.

Made for content creators and business owners, this is a tool that focuses on the readability of your content rather than the technical accuracy.

While it does all the basic grammar editing, the writing style suggestions are the stand-out feature.

Compatibility

  • Browser Extension
  • Chrome, Edge

Add-ons

  • Gmail, Outlook, Google Docs, Microsoft Word, WordPress, LinkedIn

Free Features

  • Spell checking
  • Auto grammar correction
  • Punctuation checker tool
  • Vocabulary suggestions

Additional Paid Features

  • Passive voice analysis
  • Paraphrasing tools
  • Writing style suggestions
  • Plagiarism checker
  • Formatting suggestions

Pros

  • Focused on writing style and readability
  • Great for content creators and business owners
  • Competitive rates for team plans

Cons

  • Limited plagiarism checking
  • The free plan is very basic

Pricing

Subscription.

Free version available.

Pro

  • Monthly – $24.95/month
  • Annual – $119.40/year

Teams

  • Monthly – $14.95/month per user
  • Annual – $95.40/year per user

Scribendi – Best Professional Grammar Checker

This is Scribendi grammar checker tool.

Professional proofreading from experts in your field.

While it’s not instant, this service is great for important documents that need thorough proofreading before publishing.

Compatibility

  • All browsers – documents are submitted manually

Key Features

  • Professional proofreading
  • Professional editing

Pros

  • Real human eyes on your documents, not AI-powered
  • Great for editing or proofreading for English grammar on translated documents
  • Guaranteed to get high-quality editing or proofreading

Cons

  • Not instant – takes hours for each document
  • Not useful for real-time editing on smaller bits of content
  • Geared towards larger pieces of content, not for daily use

Pricing

Cost per word.

  • Normal – $40 per 1000 words
  • Rushed – $70 per 1000 words

Writer (Formerly Qordoba) – Best Grammar Checker for Teams

This is WRITER grammar checker tool.

This software is way more than just a grammar checker.

It’s an all-encompassing content creation solution that standardizes editing dictionaries, style guides, and more across your entire team.

Compatibility

  • Extensions
  • Chrome extension

Add-ons

  • Microsoft Word, Outlook, Google Docs, Figma

Free Features

  • Spelling checker
  • Basic grammar suggestions
  • Punctuation corrections
  • Autocorrect for typos

Additional Paid Features

  • Plagiarism checking (all paid plans)
  • Concise writing suggestions (all paid plans)
  • Writing style analysis (all paid plans)
  • Customizable dictionary (Team and above)
  • Content quality analytics (Team and above)
  • Readability score (Team and above)
  • Add new grammar rules and automatic corrections (Team and above)
  • Custom style guides for editing (Enterprise)

Pros

  • Extreme flexibility
  • Great for standardizing content across your whole team
  • Manage and compare a large amount of content from many different people
  • Build your own custom style guide for consistent and clear suggestions

Cons

  • Limited compatibility and integrations
  • No advanced content management features
  • No integrations with content optimization tools

Pricing

Subscription.

Free version available.

Pro

  • Monthly – $11/month
  • Annual – $99/year

Team

  • Monthly – $18/month
  • Annual – $162/year
  • Enterprise version available for custom pricing.

Zoho Grammar Checker – Best for Use with Zoho Writer

This is Zoho grammar checker tool.

With a basic free grammar checker, this is a good option for quick checks on smaller chunks of text.

There is a more advanced grammar checker, but it’s a built-in feature for the online Zoho Writer word processor.

Compatibility

  • Web Editor
  • All browsers

Key Features

  • Spell checking
  • Basic grammar checking and suggestions
  • Formal writing suggestions
  • Concise writing suggestions
  • Context-based word corrections
  • Punctuation suggestions
  • Word repetition detection
  • Readability scores
  • Passive tense analysis

Pros

  • Built into the Zoho Writer word processor
  • The free option works well for small blocks of text
  • Effective free tool for writers

Cons

  • Upsells and upgrade prompts throughout the webpage
  • Advanced editing options only for use with Zoho Writer word processor
  • Account needed for most features

Pricing

  • Free.

NOUNPLUS – Best Free Basic Grammar Checker

This is NOUNPLUS grammar checker tool.

If you just want to bare basics, this grammar checker could work for you.

It’s a free option with both a browser version and a mobile app.

Compatibility

  • Web-based
  • All browsers

Mobile App

  • iOS, Android

Key Features

  • Basic grammar suggestions
  • Punctuation corrections

Pros

  • No upsells or upgrade prompts
  • Use on your mobile device

Cons

  • Spell checker is a separate service
  • No plagiarism detection
  • Limited customer service
  • Only for use with content less than 2000 words

Pricing

  • Free.

Trinka AI – Best Grammar Checker for Technical Writing

This is Trinka AI grammar checker tool.

Whereas most grammar checkers are aimed at professionals, content creators, or students, this tool is created with technical writers in mind.

It works well in almost any context, including making accurate corrections in scientific writing.

Compatibility

  • Web Editor
  • All browsers

Browser Extension

  • Chrome, Firefox, Safari

Add-ons

  • Microsoft Word

Key Features

  • Spell checking – including technical and scientific terms
  • Customizable style guides
  • Automatic edits
  • Consistency analysis, autocorrelation
  • Downloadable change reports
  • Customizable dictionary of terms
  • One-click editing (across the whole document)
  • Advanced grammar suggestions
  • Concise reading suggestions
  • Context-based word choice suggestions
  • Language bias analysis
  • Publication readiness checks

Pros

  • Works well for technical writing, academic writing, and journal publications
  • Catches some errors that other tools may miss
  • Great for long pieces of content
  • All-around useful grammar checker tool

Cons

  • Limited extensions and add-ons
  • Fewer content engagement stats
  • The free plan only allows 10,000 words per month

Pricing

Subscription.

Free plan available.

  • Basic – Free
  • Premium – $20/month or $80/year

Typely – Best Online Browser-Based Grammar Editor

This is Typely grammar checker tool.

A good option for browser-only, collaborative use.

Use this tool to improve the overall readability of your writing without focusing on the nitty-gritty grammar rules.

Compatibility

  • Web Editor
  • All browsers

Key Features

  • Spell checking
  • Writing tone analysis
  • Concise writing suggestions
  • Readability scores
  • Content stats report
  • Writing style analysis
  • Punctuation checking

Pros

  • Export directly to Google Docs
  • Use on documents of any size
  • Ideal for remote teams

Cons

  • More focus on typos and readability, less focus on grammar errors
  • Browser only – no offline options
  • Not ideal for ESL writers who need more precise grammar editing

Pricing

  • Free.

Readable – Best Grammar Checker for Content Marketers

This is Readable grammar checker tool.

Great for agency use and content marketers.

An ideal grammar tool for simplifying your writing.

Compatibility

  • Web Editor
  • All browsers

Key Features

  • Basic grammar suggestions
  • Spell checking
  • Content readability score
  • Customizable dictionary
  • Analyze full-text documents
  • Keyword density analysis
  • Tone and sentiment analysis
  • Passive voice analysis
  • Whole website readability scoring (Commerce and above)
  • Track your website for readability issues (Commerce and above)
  • API access (Agency only)
  • Branded readability reports (Agency only)

Pros

  • Get alerted if anything on your website has readability problems
  • Send your client branded reports about their content
  • Integrations with Slack and Dropbox (Commerce and above)
  • Commerce and agency accounts allow multiple users on the same account

Cons

  • Online grammar checker only, web-based
  • Readability analysis doesn’t highlight specific errors for some categories
  • Suggestions may sometimes be oversimplified
  • Content reports take some time to load

Pricing

Subscription.

ContentPro

  • Monthly – $8/month
  • Annual – $48/year

CommercePro

  • Monthly – $48/month
  • Annual – $288/year

AgencyPro

  • Monthly – $138/month
  • Annual – $828/year

FAQ

Is it safe to check grammar online?

Most grammar checkers use top-quality encryption to keep any stored data safe from outside access.

If you’re worried about the grammar checking tool itself, look for either an offline tool or any tool that doesn’t save documents or text you run through it.

These will most likely be copy/paste editors, not those that allow document imports/exports.

What is the most popular grammar checker?

Grammarly is the most popular grammar checker.

It’s widely used by individuals and businesses around the world.

This doesn’t mean it’s the best tool for everyone, but it works well for a lot of different uses.

After Grammarly, Hemingway is likely the second most popular grammar checker.

What are must-have features for grammar checker tools?

You need a grammar checker that looks at the following:

  • Spelling
  • Punctuation
  • Noun-verb agreement
  • Sentence arrangement
  • Adverbs and adjectives
  • Word ordering

These are some of the bare-bones features a grammar checker should have.

Advanced grammar checkers will look at more than these basic grammar rules, but an effective tool should at least look at these areas.

What is the fastest grammar checker?

The fastest grammar checkers are those that offer real-time error analysis.

Most checkers that have a browser extension offer real-time input.

These include:

  • Grammarly
  • Language Tool
  • Ginger
  • ProWritingAid
  • Linguix
  • Scribens
  • Slick Write
  • OutWrite
  • Writer
  • Trinka AI

Other programs may have real-time editing on either their mobile or desktop apps.

Besides real-time editing, the fastest programs tend to be any grammar checkers with web editors.

Conclusion

Grammar checkers are an invaluable part of any content creator’s toolkit.

Find the tool that best matches your budget and your needs so you can up your writing game today.

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