6 Best Spelling Checker Services in 2026

A typo on a website or in an ad costs a business customer trust and search visibility. This review covers 6 spelling and grammar checking services: which ones genuinely support multiple European languages, and which are worth choosing only for English-language content — with a comparison of features and pricing models.

Clean, correct text isn’t a matter of aesthetics — it’s a matter of trust. A customer who spots a typo in a product description, a newsletter, or an ad banner subconsciously starts questioning how professional the whole business is. Search engines factor text quality into E-E-A-T signals too. The catch for European businesses running multilingual content is that many of the world’s most popular spell-checking services don’t actually cover every language a pan-European brand needs — and that’s worth knowing before you pay for a subscription.

Why a business needs a spelling checker

Automated spell checking saves an editor’s or marketer’s time and lowers the risk of public mistakes in materials seen by thousands of people: on a website, in email campaigns, in ad accounts, in commercial proposals. This matters most where a mistake is hard or expensive to fix after publishing — a printed catalogue, an already-launched ad campaign, an email to a client that can’t be recalled.

• Brand trust — errors in copy lower how expert and reliable a company appears.
• Conversion — sloppy text on a landing page or in an ad distracts from the offer.
• SEO — search engines weigh content quality and correctness as part of a page’s expertise signals.
• Team speed — automated checking frees an editor from hunting typos, leaving time for meaning-level edits.

What to look for when choosing a service

• Language coverage. The main filter for a European business running content in more than one language — several popular services check English only.
• Type of check. Spelling, grammar, or also style and readability — these are different depths of analysis.
• Format. A browser extension, a plugin for Word or Google Docs, a desktop app, or an API for CMS integration.
• Context accuracy. The ability to tell homophones apart and correctly check agreement and declension — a weak point of most basic checkers, especially for inflected languages like Polish.
• Pricing model. Whether there’s a free tier, or whether checking requires a paid subscription from the start.

6 best spelling checker services

1. LanguageTool

A multilingual spelling, grammar, and punctuation checker supporting more than 30 languages, including Polish, Ukrainian, and Russian. Available as a browser extension, an add-on for Google Docs and Microsoft Word, a desktop app, and an API for developers.

• Language coverage: Polish, Ukrainian, English, Russian, and around 25 more languages.
• What it checks: spelling, grammar, punctuation, basic style.
• Pricing: a free tier with a limit on text length per check; a paid plan removes the limits and adds advanced style rules.
• Best for: businesses running content across several European languages in one tool.
• Extra features: a mobile keyboard app for Android/iOS that checks text while typing in any app, a stricter “Picky mode” for tighter style edits, a personal dictionary and team-wide custom rules on the Enterprise plan.

2. Microsoft Editor

A built-in spelling and style checker in Word and Outlook, also available as a standalone browser extension for Edge and Chrome.

• Language coverage: a wide range of languages, including Polish, Ukrainian, and Russian, depending on the Office language packs installed.
• What it checks: spelling, grammar, clarity, and style.
• Pricing: basic checking is free; advanced features come with a Microsoft 365 subscription.
• Best for: teams already drafting documents in Word or correspondence in Outlook that don’t want a separate tool.
• Extra features: an “Editor Score” with error breakdown by category, checks for inclusive language and tone formality, built-in readability statistics.

3. Google Docs (built-in check)

Spelling and basic grammar checking right inside Google Docs, with no extra extensions to install.

• Language coverage: Polish, Ukrainian, Russian, English, and dozens of other languages.
• What it checks: real-time spelling and basic grammar errors; less accurate on complex style than LanguageTool or Microsoft Editor.
• Pricing: completely free for any Google account.
• Best for: teams already drafting content in Google Docs who need a fast, basic check at no extra cost.
• Extra features: voice typing/dictation, offline editing mode, a built-in dictionary and translator for any selected word right inside the document.

4. Grammarly

One of the world’s most popular spelling and style checkers, with a browser extension, a desktop app, and plugins for Word and Google Docs.

• Language coverage: English only (American, British, Australian, and Canadian variants) — it does not check Polish, Ukrainian, or Russian text.
• What it checks: spelling, grammar, plus tone, readability, and engagement.
• Pricing: a free basic tier; paid Premium/Business plans add deeper style analysis.
• Best for: businesses producing English-language content for a European audience — a website, newsletters, presentations.
• Extra features: a tone detector, a plagiarism checker (Premium/Business), the GrammarlyGO generative AI assistant for rewriting and drafting text, a snippets library for teams.

5. ProWritingAid

A grammar and style checker focused on deep structural analysis of text: repeated words, overlong sentences, excessive passive voice.

• Language coverage: English only.
• What it checks: grammar and more than 20 style categories; integrates with Word, Google Docs, and Scrivener.
• Pricing: a free check with a text-length limit; a paid plan unlocks the full feature set.
• Best for: content marketing teams producing a lot of English-language long-form content who need detailed style analytics, not just spell checking.
• Extra features: a terminology consistency check, a built-in thesaurus, pacing and structure analysis for fiction, a separate plagiarism-check module.

6. Ginger Software

A spelling and grammar checker with added translation and text-to-speech features.

• Language coverage: built primarily for English.
• What it checks: contextual grammar, and suggests sentence rephrasing; has browser and Office plugins.
• Pricing: a free basic check; a paid Premium plan unlocks advanced features.
• Best for: small teams or freelancers who need a simple tool for English-language text.
• Extra features: text-to-speech read-aloud, translation into 40+ languages, a personal grammar trainer built around the user’s recurring mistakes.

Comparison table of spelling checker services

Which service to choose

• If you need checking across several European languages, Polish included — LanguageTool or Microsoft Editor: the only popular services with full multilingual grammar coverage, not just spelling.
• For a fast, free check with nothing to install — the built-in Google Docs check.
• If your main content is English for a European audience — Grammarly for overall correctness and tone, ProWritingAid for deep style analysis on long-form content.

None of these services fully replaces an editor. Automated checking catches typical errors well, but it doesn’t always understand brand context, tone of voice, or industry terminology — the final review of key materials is still worth leaving to a person.

Frequently asked questions

Are there free spelling checkers that support multiple European languages?
Yes. Google Docs, LanguageTool (with a per-check text length limit) and Microsoft Editor all offer a free level of checking across dozens of languages, including Polish.

Does Grammarly check languages other than English?
No. Grammarly only supports English and does not recognise Polish, Ukrainian, or Russian text.

Which tool checks grammar most accurately, not just spelling?
For multilingual European content, LanguageTool and Microsoft Editor apply broader grammar rules than the built-in Google Docs check. For English specifically, ProWritingAid offers the most detailed style analysis.

Can a business fully rely on automated spell checking?
No. Automated tools catch typical errors well, but they don’t always understand brand context, tone of voice, or industry terminology — a human editor should still do the final review of key materials.