Best Online Spell Checkers Compared (2026)

Key Takeaways

List of the best online spell checkers

Here is a selection of the best online spell checkers:

1. Antidote

Your Personal Language Assistant

Discover Antidote, an advanced correction tool, known for its accuracy in French. It is not limited to correcting your texts, but also offers a rich linguistic database to enrich and improve your writing.

Features

Advanced correction : Detects errors in grammar, spelling, syntax, and more.
Rich dictionaries : 127,000 words, 40,000 phrases, 1M synonyms, 900,000 examples.
Versatile integration : Compatible with various software and browsers.
DETAILED AND COMPLETE REVIEW OF ANTIDOTE

Pricing

Antidote+ Personal

$29 for the first year (instead of $59.95) for one language.
$45 for the 1st year (instead of $89.95) for French and English

Antidote+ Family

$49 the 1st year (instead of $99.95) for one language
$75 the 1st year (instead of $149.95) for French and English.

Antidote 11 only

$59.00 (instead of $129.95) for one language.
$99.00 (instead of $198.95) for French and English

Click here to discover the offers and benefit from exclusive discounts

In conclusion, whether you are a professional, a student or simply someone who wants help to improve your texts, Antidote is the tool you need. With its advanced features and competitive pricing, it's a smart investment for anyone who writes regularly.

2. MerciApp

Your Advanced Writing Assistant

MerciApp is an online text correction software that combines simplicity and expertise.

Designed for professionals and individuals, it offers a complete analysis of your writings, guaranteeing impeccable writing.

Features

Complete correction : Spelling, grammar, and advanced syntax analysis.
Built-in dictionaries : Access to numerous linguistic references.
Universal access : Available for everyone, whether you are a professional or an individual.
DETAILED AND COMPLETE REVIEW OF MERCIAPP

Pricing

MerciApp Free

0€/month
Browser extension, Office 365 integration, spell analysis, basic grammar analysis, spacing consistency, personal dictionary.

Thanks App Pro

€10/month (monthly billing) or €8/month (selected volume).
Includes all of the features in the free version plus correction on Gdocs and Gslides, proofreading on Microsoft Office, expert grammar analysis, style improvement, and more.

ThanksApp Enterprise

Price on quotation.
Offers all the features of the Pro version with additional benefits for larger teams.

Click here to discover the offers and benefit from exclusive discounts

MerciApp is the ideal tool for those looking to improve their texts. With its various offers, it meets everyone's needs, guaranteeing quality writing.

3. LanguageTool

Your Writing Companion

Discover LanguageTool, an online text correction software that combines performance and simplicity. Whether you are a professional or an individual, it is designed to help you produce flawless texts.

Features

Complete correction : Spelling, grammar, and advanced syntax analysis.
Built-in dictionaries : Access to various linguistic references.
Universal access : Available for everyone, professionals and individuals.
Google Chrome extension

Pricing

Individual User Formula

2 years : CA$139.90 (or CA$5.83/month).
Yearly : $79.90 CAD (or $6.66/month)
Quarterly : $49.90 CAD (or $16.63/month)
Monthly : $29.90 CA.

Team Formula (up to 20 people)

$151.80/year for 2 users (or $12.65/month per user)

LanguageTool is the ideal tool for anyone looking to improve the quality of their writing. Thanks to its advanced features and adapted prices, it meets everyone's needs, guaranteeing flawless drafting.

4. BonPatron

Your Ally for Impeccable Writing

Discover BonPatron, a text correction tool, known for its precision and simplicity. It not only fixes your mistakes, but also guides you to improve and enrich your writing.

Features

Quick identification : Detects lexical errors and offers suggestions.
Grammar tracking : Report grammatical errors with relevant comments.
Conjugation tool : Find the conjugation of any verb.
Detailed guide : Information about rules, exceptions, and common errors.
Synthesis : Summary of corrections for each text.
English-French dictionary : Easily translate your words.
Inserting accents : Makes it easy to add accents to your words.
DETAILED AND COMPLETE REVIEW OF GOOD BOSS

Pricing

BonPatron Pro (Individual) : €12.99 (~$16) for one year
Group licenses : Discounts available for volume purchases. Contact them for more information.

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Do a Try it now by BonPatron

In conclusion, BonPatron is the perfect tool for those who seek to write in French without mistakes and with confidence. Its range of features and competitive pricing make it a must-have choice for writers of all levels.

5. Cordial - online

Precision at the service of your editorial team

Discover Cordial, an online correction tool that stands out for its expertise and precision, competing with giants like Antidote. It is designed for those who seek to eliminate grammatical and spelling errors from their texts.

Features

Optimal compatibility : Seamlessly integrated with Microsoft Office.
Higher correction : Impressive correction rate of 90%.
Clear explanations : Detailed descriptions of the grammar rules for each correction.

Pricing

Free : 0€

Spelling and grammar correction
Limited to 1000 words
Copy and paste correction

Individual : 59€/year

Highlighting faults
Advanced spelling and grammar analysis
Premium browser fix
Integration into office software
Access to Cordial language resources
No word limitation

Businesses : Tailor-made rate

Correction for the whole team
Professional reformulation
Multilingual correction
Manager management interface

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Give it a try now from Cordial

In conclusion, Cordial offers a complete solution for quality writing in French.

Whether you are an individual or a company, there is an offer adapted to your needs.

6. Reverso

Your Online Instant Concealer

Discover Reverso, an online text correction software that stands out for its speed and efficiency. Ideal for those looking for instant corrections while benefiting from additional information to enrich their grammar.

Features

Instant correction : Corrections integrated directly into the text or email
Additional info : Access definitions, synonyms, conjugations, and grammar rules.
Limitation : Correction of up to 2,000 characters by copy and paste.
DETAILED AND COMPLETE REVIEW OF REVERSO

Pricing

Reverso Premium Yearly

EUR 6.49/month (billed once EUR 77.88)

Reverso Premium Monthly :

9,99 EUR/month.

Special offers :

For teams or organizations.
For students and teachers.

Try Reverso now

In conclusion, Reverso is the ideal tool for those looking to get text corrections in French quickly and efficiently. Its ease of use and competitive prices make it an essential choice for writers of all levels.

Essential Spell Checker Features

Each text deserves to be impeccable. A modern spelling and grammar checker guarantees you:

Full analysis : It detects and highlights syntax, spelling, grammatical errors, repetitions, and conjugation errors.
Customization : Some offer the possibility to adjust the corrections according to your preferences.
Multiple references : Dictionaries of definitions, common nouns, proper nouns, synonyms, antonyms, and even abbreviations.
Expressions and proverbs : Discover rare phrases, proverbs, and expressions to enrich your writing.
Detailed tutorials : Access guides on spelling, grammar, typography, and conjugation.
Continuing education : Perfect for anyone looking to constantly improve their language proficiency.

In short, a spell checker and modern grammar is much more than a simple aid or correction software.