Best Italian Grammar Checkers in 2026

Why Italian Grammar Is Tricky

Most grammar checkers were built for English first. Italian presents a completely different set of challenges that generic tools often miss:

• 21 verb tenses — Italian has more verb tenses than almost any other European language. Between indicativo, congiuntivo, condizionale, and imperativo — each with multiple tenses — there are roughly 21 distinct forms. A checker needs to know that "se io fossi" is correct (congiuntivo imperfetto), not "se io ero."
• Gendered nouns and adjectives — Every Italian noun is masculine or feminine, and adjectives must agree in both gender and number. "La casa bianca" but "il libro bianco." Plural forms change too: "le case bianche," "i libri bianchi." A grammar checker must track these agreements across the sentence.
• The congiuntivo mood — The subjunctive is alive and well in Italian. Native speakers increasingly skip it in casual speech, but in writing it matters. "Penso che sia importante" (congiuntivo) is correct; "Penso che è importante" (indicativo) is a common mistake that good tools should flag.
• Double consonants — Spelling in Italian hinges on double letters. "Pala" (shovel) vs. "palla" (ball), "caro" (dear) vs. "carro" (cart). One missing or extra consonant changes the word entirely, and standard spell checkers often miss these because both spellings are valid words.
• Accents and apostrophes — Italian uses grave and acute accents that change meaning: "perché" (because/why) vs. "perchè" (which is actually wrong — it's always acute on perché). The distinction between "è" (is) and "e" (and) is critical. Apostrophes in elision ("l'uomo," "un'amica" but "un amico") follow strict rules.

Best Italian Grammar Checkers

1. LanguageTool — Best Free Italian Grammar Checker

LanguageTool offers some of the strongest Italian support among free grammar checkers. Its open-source rule engine includes thousands of Italian-specific grammar, spelling, and style rules maintained by native contributors.

• Italian accuracy: Very good — catches congiuntivo errors, gender/number agreement issues, accent misuse, and common double-consonant mistakes
• How it works: Browser extension (Chrome, Firefox, Safari, Edge), web editor, LibreOffice/Word add-on
• Price: Free (limited checks) or €5/month for premium with longer texts and style suggestions
• Open source: Community-maintained Italian rules, and you can self-host for privacy

Limitation: The browser extension works well, but there's no system-wide macOS integration. You can't use it natively in Mail, Notes, or other desktop apps without copy-pasting.

2. Correttore Ortografico — Best for Quick Italian Spell Checks

Correttore Ortografico is a free web-based tool built specifically for Italian. It's simple: paste your text, click check, and it highlights spelling and basic grammar errors.

• Italian accuracy: Good for spelling, basic for grammar — catches misspellings and accent errors well, but misses complex grammatical issues like congiuntivo
• How it works: Web-only text editor
• Price: Completely free
• Strength: Purpose-built for Italian, no setup required

Limitation: Web-only with no extensions or integrations. Grammar checking is shallow compared to LanguageTool. Best used for quick spot-checks rather than serious writing.

3. FlowWrite — Best for Mac Users Writing in Italian

FlowWrite is a macOS menu bar app that works in every application. Select text, press Tab, and the AI corrects your Italian grammar in place — whether you're in Mail, Slack, Pages, or any other app.

• Italian accuracy: Very good — AI-powered correction handles verb conjugations, gender agreement, congiuntivo, accents, and double consonants
• How it works: System-wide on macOS. Works in every app with text input, not just browsers.
• Price: Free (10 corrections/day) or $2.99/month for 1,000 corrections/day
• Multilingual: Handles Italian and English seamlessly — perfect for bilingual writers who switch languages in the same document

Limitation: macOS only. No Windows or web version. Requires the Accessibility permission.

4. Microsoft Editor — Best for Microsoft 365 Users

Microsoft Editor includes Italian as a supported language for spelling and grammar checking. It's built into Word, Outlook, and available as a browser extension.

• Italian accuracy: Solid — good spelling correction and basic grammar, but misses some congiuntivo and advanced agreement errors
• How it works: Built into Microsoft 365 apps (Word, Outlook), browser extension for Edge and Chrome
• Price: Free browser extension, or included with Microsoft 365 ($7/month)
• Strength: Already there if you use Word or Outlook — no extra install needed

Limitation: Italian grammar checking is less thorough than English. Advanced issues like the congiuntivo are often missed. Limited to Microsoft apps and browsers.

5. Grammarly — Limited Italian Support

Grammarly is the most popular grammar checker globally, but its Italian support remains minimal. It can catch some Italian spelling errors, but grammar checking is not reliable for Italian.

• Italian accuracy: Basic — catches obvious spelling mistakes but misses most grammar errors including verb conjugations and gender agreement
• How it works: Browser extension, Mac desktop app, mobile keyboard
• Price: Free (basic) or $12/month (premium)
• Strength: If you write mostly in English and occasionally in Italian, the English side is excellent

Limitation: Not recommended as a primary Italian grammar checker. Grammarly was designed for English and Italian support feels like an afterthought. For serious Italian writing, use a dedicated tool.

Comparison Table

For Italian-English Writers

If you speak both Italian and English, you know the pain: most grammar tools force you to pick one language. You set Grammarly to English and it flags your Italian as errors. You switch to an Italian checker and your English emails go unchecked.

FlowWrite handles both languages without switching modes. The AI detects whether you're writing in Italian or English and corrects accordingly. Write an Italian email in Mail, fix it with one keystroke. Switch to Slack and reply in English — same keystroke, same tool. No language toggles, no separate apps.

This matters especially for people living abroad, working in international teams, or studying in a second language. Your writing tool should adapt to you — not the other way around.