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Best Grammar Checkers in 2026

Whether you’re polishing a short message or revising longer documents, grammar checkers can help you review writing as you work. Compared on browser extensions, desktop and mobile apps, and languages supported, the entries show where each tool can be used. Style suggestions and tone detection describe other kinds of feedback to weigh, while free-plan availability and paid-from pricing help you compare costs. LanguageTool, Grammarly, and Trinka are among the named options, alongside Sapling and Wordvice AI. Consider the languages you write in, where you prefer to edit, and whether you want feedback on phrasing or tone as well as grammar.

88 apps
Research read 28 Sept 2026
How the order is worked out

1

Harper

Free plan Open source AndroidAPIExtension+5

Harper offers free writing checks across web and desktop platforms, with style suggestions also available. Its listed language coverage is one language.

9.1 Free plan Visit site
2

Grammalecte

Free plan Open source APIExtensionLinux+3

Grammalecte offers French-focused checks alongside dictionary options and writing tools, with listed desktop, browser, and office integrations.

8.6 Free plan Visit site
3

LanguageTool
by LanguageTool
Free plan ExtensioniPhoneMac+1

LanguageTool covers writing checks and paraphrasing across several work contexts, with additional team controls.

7.7 Free plan Visit site
4

Microsoft Editor

Free plan ExtensionMacWeb+1

Editor covers basic proofreading for free and adds clarity, style, and similarity assistance. Consider the language-selection limit and Edge's cloud-processing option when choosing how to use it.

7.7 Free plan Visit site
5

Ginger
by Ginger
Free plan AndroidAPIExtension+5

Ginger brings English proofreading, rephrasing, and translation into desktop, mobile, web, and organizational workflows. Compare the listed plan terms carefully, as multiple paid options are provided.

7.7 Free plan · paid from $6/mo (annual) Visit site
6

Sapling

Free plan APIExtensionSelf-hosted+2

Sapling brings team writing tools together with developer APIs, integrations and enterprise deployment options.

7.6 Free plan · paid from $12/user/mo (annual) · 30-day trial Visit site
7

Trinka

Free plan APIExtensionMac+3

Trinka combines academic and technical language tools with document proofreading and integrations.

7.6 Free plan · paid from $20/mo Visit site
8

Scribens
by Scribens
Free plan AndroidAPIExtension+4

Scribens offers writing assistance across major desktop and mobile platforms, with style and tone tools in 30 languages.

7.6 Free plan · paid from €4.99/user/mo (annual) Visit site
9

Wordvice AI

Free plan ExtensionMacWeb+1

Wordvice AI brings proofreading and a broad set of writing tools together, with modes and limits that differ by plan. Check the free submission cap and annual Premium billing against your workload.

7.6 Free plan · paid from $9.95/mo (annual) Visit site
10

Linguix

Free plan AndroidAPIExtension+2

Linguix combines individual writing assistance with a separate set of team features. Check the annual billing terms and Business seat minimum when choosing a plan.

7.6 Free plan · paid from $11.67/mo (annual) Visit site
11

MerciApp
by MerciApp
Free plan AndroidExtensioniPhone+3

MerciApp combines writing correction with rewriting assistants and reusable text snippets. The free plan has daily usage limits, while Assist starts at €12 a month.

7.6 Free plan · paid from €12/user/mo · 30-day trial Visit site
12

Duden-Mentor

Free plan APIExtensionMac+2

Duden-Mentor combines German proofreading with style suggestions across browser text fields and supported Word versions.

7.6 Free plan Visit site
13

Cordial
by Cordial
Free plan AndroidExtensioniPhone+2

Choose Cordial for spelling, grammar, and style correction across web, Windows, and supported browser extensions.

7.6 Free plan Visit site
14

TextGears
by TextGears
Free plan APIExtensionSelf-hosted+1

TextGears offers writing checks alongside API tools for analysis, summarization, and keyword extraction.

7.6 Free plan · paid from $2.48/mo Visit site
15

iGrammar

Free plan AndroidAPIExtension+3

iGrammar combines language correction and revision tools with web, desktop, mobile, API, and extension access. Its free plan is limited to 10 corrections, while Unlimited costs $10 a month.

7.5 Free plan · paid from $10/mo · 3-day trial Visit site
16

Grammar Guru

Free plan ExtensionLinuxMac+2

Choose Grammar Guru if you want writing corrections and rewriting across its web, desktop, or browser extension options.

7.5 Free plan · paid from $1/mo Visit site
17

GemType
by GemType
Free plan WindowsMacLinux+1

Choose GemType if you want writing checks, fixes, rewrites, and tone presets across browser and desktop use.

7.5 Free plan Visit site
18

Lexicon

Free plan ExtensionLinuxMac+1

Choose Lexicon if you want a free desktop editor with local proofreading, flexible document export and optional local-model rewriting.

7.5 Free plan Visit site
19

Grammarly
by Grammarly
Free plan AndroidiPhone

Choose Grammarly for a writing toolkit that combines proofreading, rewrites, tone tools, and monthly AI prompts across browser, desktop, and mobile apps.

7.4 Free plan · paid from $12/user/mo Visit site
20

Scribbr Grammar Checker
by Scribbr Grammar Checker
Free plan ExtensionWeb

Scribbr Grammar Checker covers common grammar, spelling, punctuation, and word-choice issues at no charge. Writers needing a broader full-document review should note Scribbr’s separate AI Proofreader.

7.4 Free plan Visit site
21

Rechtschreibprüfung24
by Rechtschreibprüfung24
Free plan APIExtensionWeb

Choose Rechtschreibprüfung24 for web-based writing assistance with style suggestions, tone detection, and a browser extension.

7.4 Free plan Visit site
22

Korr
by Korr
Free plan ExtensionWebWindows

Korr offers local text correction across a website, extension, and Windows app, with review controls and a device-stored personal dictionary.

7.4 Free plan Visit site
23

GrammarCheck.ai

Free plan AndroidAPIExtension+3

Choose GrammarCheck.ai if you want grammar and punctuation correction alongside style suggestions and several other writing tools.

7.4 Free plan · paid from $2.50/mo (annual) Visit site
24

Corrector.app

Free plan AndroidExtensioniPhone+2

Corrector.app combines language checks and word suggestions with a free AI content detector.

7.4 Free plan Visit site
25

Gramma

Free plan APILinuxMac+3

Gramma provides free, configurable LanguageTool checking from the command line, with Git, editor, and JavaScript integrations. Its local-server option adds control but requires Java.

7.4 Free plan Visit site

#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price

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