I’ve been testing grammar checkers on and off for about four years now. Started with Grammarly back in 2022, bounced around to a dozen others since then. Some were garbage. Some surprised me. Here’s what actually works in 2026 if you need something to catch your mistakes – whether you’re writing emails, blog posts, academic papers, or just trying not to embarrass yourself on LinkedIn.
Quick Comparison Table
| Tool | Best For | Free Plan | Paid Price | Browser Extension |
|---|---|---|---|---|
| Grammarly | All-around writing | Yes (limited) | $12/mo | Yes |
| LanguageTool | Multilingual writers | Yes (generous) | $4.99/mo | Yes |
| ProWritingAid | Long-form content | Yes (500 words) | $10/mo | Yes |
| Hemingway Editor | Readability | Yes (web app) | $19.99 one-time | No |
| QuillBot | Paraphrasing + grammar | Yes | $8.33/mo | Yes |
| Ginger Software | ESL writers | Yes (limited) | $7.49/mo | Yes |
| Sapling | Customer support teams | Yes | $25/mo | Yes |
| Wordtune | Sentence rewriting | Yes (10 rewrites/day) | $9.99/mo | Yes |
1. Grammarly – The One Everyone Knows
Look, there’s a reason Grammarly has like 30 million daily users. The thing just works. You install the browser extension, and it starts catching errors everywhere – Gmail, Google Docs, Slack, even random text fields on websites you’d never think about.
The free version handles spelling, basic grammar, and punctuation. That covers maybe 70% of what most people need. Where it gets interesting is the premium tier. Tone detection is surprisingly accurate – it’ll tell you when your email sounds passive-aggressive before you send it (which, honestly, has saved me a few times). The clarity suggestions are solid too. It caught me using “utilize” instead of “use” more times than I’d like to admit.
The AI rewrite feature they added in late 2025 is decent but not amazing. It sometimes makes sentences sound weirdly formal. And the pricing went up again – $12/month on the annual plan now, which stings if you’re just a casual writer.
What I like
- Works basically everywhere with the browser extension
- Tone detection is genuinely useful for professional emails
- Desktop app for Mac and Windows runs smooth
- Plagiarism checker included with Premium
What bugs me
- Free plan got more restrictive in 2026 (100-word limit on some features)
- Sometimes flags stylistic choices as errors when they’re intentional
- The AI suggestions can feel generic
2. LanguageTool – Best Free Option (And It’s Not Close)
If you don’t want to pay for anything, LanguageTool is where you should start. The free tier gives you 10,000 characters per check with no account required. Just paste your text in and go.
But here’s the thing most people miss – LanguageTool supports over 30 languages. If you write in German, Spanish, French, or Portuguese regularly, this is the only real option. Grammarly is English-only (plus some beta support for other languages that honestly isn’t great). LanguageTool was built multilingual from day one, and it shows.
The premium version at $4.99/month is a steal compared to Grammarly. You get style suggestions, longer text limits, and add-on dictionaries. I used it for six months when I was writing bilingual content and never felt like I was missing much from Grammarly.
One downside: the browser extension can be slow on longer documents. Like noticeably laggy on anything over 3,000 words. And the style suggestions in English aren’t quite as refined as Grammarly’s. But for the price? Hard to complain.
What I like
- 30+ languages with actual good support
- Open-source core (you can self-host if you’re technical)
- Premium is half the price of Grammarly
- LibreOffice and Google Docs integration
What bugs me
- English style suggestions lag behind Grammarly
- Extension gets sluggish on long documents
- UI feels a bit dated compared to competitors
3. ProWritingAid – The Deep Dive Tool
ProWritingAid is what happens when someone builds a grammar checker for people who actually care about their writing craft. It doesn’t just fix commas. It analyzes sentence structure, pacing, dialogue tags, readability scores, sticky sentences, and about 20 other metrics I had to Google the first time I saw them.
I recommend this specifically for fiction writers, bloggers writing 2000+ word posts, and anyone working on manuscripts. The reports feature is wild – you get a full breakdown of your writing habits. Mine told me I overuse adverbs and start too many sentences with “I.” Fair enough.
The free version is limited to 500 words per check, which is basically useless for anything real. You need the paid plan. At $10/month (or $79/year, which is the better deal), it competes with Grammarly but offers way more depth for long-form content.
Word of warning though – it can be overwhelming. If you just want something to check your emails, ProWritingAid is overkill. The learning curve is real.
What I like
- 20+ writing reports (readability, pacing, sentence variety, etc.)
- Scrivener integration for fiction writers
- One-time purchase option ($399 lifetime) if you hate subscriptions
- Thesaurus and word explorer built in
What bugs me
- 500-word free limit is too restrictive
- Can feel overwhelming for casual writers
- Browser extension is heavier than Grammarly’s
4. Hemingway Editor – For Readability Obsessives
Hemingway is different from everything else on this list. It doesn’t really fix grammar in the traditional sense. Instead, it color-codes your text based on readability. Yellow sentences are hard to read. Red ones are very hard to read. Purple words have simpler alternatives. Green highlights passive voice.
I use it specifically for blog posts and marketing copy where readability matters. You paste in your draft, see the colors, and rewrite the highlighted parts. Simple process, but it genuinely makes your writing tighter.
The web version is completely free. The desktop app is a $19.99 one-time purchase and works offline. They added an AI editing assistant in 2025 that can rewrite sentences for you, but I mostly ignore it – the visual highlighting is the real value here.
The catch? It doesn’t check spelling. Like, at all. It won’t catch typos. You need to pair it with something else (I use LanguageTool + Hemingway as my combo). Also, it sometimes penalizes complex sentences that are actually fine in context. Not everything needs to be written at a 6th grade reading level.
What I like
- Visual color-coding is intuitive and fast
- Free web version with no account needed
- Forces you to write clearer, shorter sentences
- Desktop app works offline
What bugs me
- No spell check at all
- Sometimes flags perfectly good complex sentences
- No browser extension
5. QuillBot – Grammar Checker + Paraphraser Combo
QuillBot started as a paraphrasing tool and added grammar checking later. Honestly, the grammar checking is fine – solid B+ work. Where QuillBot really shines is when you need to rewrite something without changing the meaning. Academic writers love this for avoiding self-plagiarism across papers.
The free grammar checker works without word limits, which is nice. The paraphraser has a 125-word limit on free, which pushes you toward the $8.33/month premium pretty quickly if you use it regularly.
They also have a summarizer, citation generator, and AI detector built in. The citation generator alone saves me about 30 minutes per research paper. It pulls from a massive database and formats in APA, MLA, Chicago – all the usual suspects.
My issue with QuillBot is that the paraphrased output sometimes sounds unnatural. You need to review everything it produces. Blind copy-paste will get you in trouble, especially in academic settings where professors are getting better at spotting AI-adjacent rewrites.
What I like
- Paraphraser is genuinely useful for rewriting
- Citation generator saves real time
- No word limit on basic grammar checking
- Chrome extension works in Google Docs
What bugs me
- Paraphrased text can sound robotic
- Free paraphraser limit (125 words) is tight
- Grammar checking alone isn’t worth the premium price
6. Ginger Software – Underrated for Non-Native Speakers
Ginger flies under the radar, but it does something Grammarly and LanguageTool don’t do well – it handles the kinds of mistakes non-native English speakers actually make. Subject-verb agreement with complex structures, article usage (a/an/the), preposition errors. These are the mistakes that native speakers rarely make but ESL writers struggle with constantly.
The sentence rephraser gives you multiple alternatives for any sentence, which helps you learn patterns over time. There’s also a built-in dictionary and translation feature that supports 40+ languages.
At $7.49/month, it’s priced between LanguageTool and Grammarly. The free version is quite limited – you get about 350 characters per check, which isn’t much.
The UI looks like it hasn’t been updated since 2019 though. And the browser extension sometimes conflicts with Google Docs in weird ways. I had to disable it temporarily a couple times when it kept freezing my cursor.
What I like
- Excellent for ESL-specific error patterns
- Sentence rephraser with multiple alternatives
- Built-in translation (40+ languages)
- Personal trainer feature tracks your common mistakes
What bugs me
- Dated interface
- Browser extension can be buggy in Google Docs
- Very limited free plan
7. Sapling – Built for Teams and Customer Support
Sapling is the odd one out here. While every other tool targets individual writers, Sapling is built for teams – specifically customer support and sales teams who write hundreds of messages per day.
It integrates with Zendesk, Salesforce, LinkedIn, and a bunch of CRM platforms. The autocomplete suggestions are trained on professional communication, so they actually sound appropriate for business contexts. It also tracks team-wide writing quality metrics, which managers seem to love.
For individual use, Sapling’s free tier is decent. Grammar and spelling checks work fine. But the $25/month price tag for the pro version is steep compared to alternatives, and it really only makes sense if you’re in a team environment.
What I like
- CRM and helpdesk integrations
- Team analytics dashboard
- Fast autocomplete trained on professional writing
What bugs me
- $25/month is expensive for individual use
- Overkill if you’re not in customer-facing roles
8. Wordtune – When You Know What You Want to Say but Can’t Say It
Wordtune is less of a grammar checker and more of a writing companion. You highlight a sentence, and it gives you rewrites – casual, formal, shorter, longer. The rewrites are actually good about 60-70% of the time, which is better than most AI rewrite tools I’ve tried.
The free plan gives you 10 rewrites per day. Premium bumps that to unlimited plus adds a full-page editor, summaries of YouTube videos and articles, and an AI writing assistant. At $9.99/month, it’s reasonable if you use the rewrite feature daily.
I mainly use Wordtune when I’m stuck on a sentence and can’t figure out how to phrase something. It’s like having a thesaurus but for entire sentences. Not a replacement for a proper grammar checker, but a solid complement to one.
What I like
- Sentence rewrites are genuinely helpful
- Casual/formal tone switching works well
- YouTube and article summarization is a nice bonus
What bugs me
- 10 free rewrites/day is limiting
- Grammar checking is basic compared to Grammarly
- Sometimes suggests rewrites that change the meaning
How I Tested These Tools
I ran the same 5 text samples through each tool – a professional email with intentional errors, a blog post draft, an academic paragraph, a casual social media post, and a technical document. I tracked how many real errors each tool caught, how many false positives it flagged, and how useful the suggestions were.
Grammarly and LanguageTool caught the most actual errors. ProWritingAid caught fewer grammar mistakes but provided the most useful feedback on writing style. Hemingway was the fastest to use but missed the most technical errors (expected, since it focuses on readability). QuillBot and Wordtune were better at rewriting than catching errors.
Which One Should You Pick?
Depends entirely on what you need:
- Just want the best all-around option? Grammarly. The free plan handles basics, and premium is worth it if you write professionally.
- Don’t want to pay anything? LanguageTool. Most generous free tier, open source, and multilingual.
- Writing novels, long posts, or manuscripts? ProWritingAid. The depth of analysis is unmatched.
- Need to make your writing clearer? Hemingway + any spell checker.
- Academic writing or paraphrasing? QuillBot for the citation generator alone.
- English is your second language? Ginger. Built specifically for ESL patterns.
- Running a support team? Sapling if the budget allows it.
- Stuck on phrasing? Wordtune as a secondary tool.
My personal setup right now is Grammarly free for everyday stuff and ProWritingAid for long-form articles. Used to pay for Grammarly Premium but honestly the free tier plus ProWritingAid covers everything I need. If you want to explore more AI writing tools beyond grammar checkers, we’ve got a full breakdown of those too.
For what it’s worth, a good grammar checker pairs really well with the right text editor. If you’re doing serious writing, check out our list of best markdown editors – some of them have built-in grammar checking or integrate with these tools directly.
FAQ
Is Grammarly still worth paying for in 2026?
For professional writers, yes. The tone detection and advanced clarity suggestions save real time. For casual use, the free plan plus LanguageTool covers most needs without spending anything.
Can grammar checkers detect AI-generated text?
Some can. QuillBot has a built-in AI detector, and Grammarly added one in late 2025. They’re not 100% accurate though – I’ve seen them flag human-written text as AI and miss obvious AI content. Don’t rely on them as your only check.
Do grammar checkers work with Google Docs?
Grammarly, LanguageTool, ProWritingAid, and QuillBot all have Google Docs add-ons or browser extensions that work in Docs. Hemingway doesn’t – you need to copy-paste into their web app.
What’s the best grammar checker for students?
QuillBot if you need citations and paraphrasing. LanguageTool if you want free with no restrictions. ProWritingAid offers student discounts and the writing reports help you actually improve over time, not just fix errors.
Are free grammar checkers safe to use?
The major ones (Grammarly, LanguageTool, QuillBot) have clear privacy policies and encrypt your data. LanguageTool is open source, so you can verify what it does with your text. I’d avoid no-name grammar checkers you find through random Google searches – some of those harvest your text for training data.