Grammarly's free plan only scratches the surface, and its best suggestions sit behind a paywall. Several free AI grammar checkers now match or beat it in specific jobs, from multilingual writing to readability and paraphrasing. Here are seven that cost nothing to start with, and what each one is genuinely good at.
Why look past Grammarly
Grammarly free covers basic spelling and a slice of grammar, then funnels everything interesting — tone, clarity, plagiarism — into Pro at $12 per month billed annually. That is fine for casual email, but if you write in more than one language, edit long documents, or want to rewrite clunky sentences rather than just flag errors, you will hit the ceiling fast. The tools below each solve one of those jobs better than Grammarly free, without requiring a card.
1. LanguageTool — best overall free checker
LanguageTool is the strongest all-round free alternative. It is open-source at its core, checks more than 30 languages and dialects, and its free tier is genuinely useful rather than a trial in disguise: you get a generous per-check character allowance with no hard monthly quota. It runs as a browser extension, a desktop app, and plugs into Microsoft Word and LibreOffice.
Where it wins is multilingual writing and privacy. If you draft in English and Spanish, or simply prefer software that is not vacuuming your drafts for ad targeting, LanguageTool is the pick. It catches spelling, basic punctuation, and common style slips. It does not do tone detection or AI rewriting — Premium, roughly €4.16 per month billed annually, adds a higher character limit, tone analysis, and a personal dictionary. One caveat from real use: it is rule-based at heart, so its suggestions can feel mechanical on creative prose. For straightforward, correct writing in many languages, nothing free touches it.
2. QuillBot — grammar plus paraphrasing in one place
QuillBot approaches the problem from the other side. Most checkers flag what is wrong; QuillBot's real talent is rewriting what is clunky. Its free plan paraphrases up to 125 words at a time and includes grammar checking in six languages, with no signup required for the basics. That makes it the fastest tool here for turning an awkward paragraph into something readable.
Writers who use English as a second language and students get the most from it. Paste a paragraph, get two or three fluent alternatives, and learn phrasing in the process. Premium runs around $8.33 to $9.95 per month billed annually, unlocking unlimited paraphrasing modes and a document interface. The limit to know: the 125-word free cap means long documents get chopped into chunks, so QuillBot works best as a companion to a full-document checker, not a replacement for one.
3. Hemingway Editor — readability, not grammar
Hemingway is the outlier on this list, and for many writers the most useful. It does not check grammar at all. It checks readability: long winding sentences, passive voice, adverbs, and dense paragraphs that are technically correct but exhausting to read. The web version is free with no account and no usage catch, and it grades your text with a readability score.
Use it after a grammar checker, not instead of one. Run your draft through LanguageTool first, then paste it into Hemingway to see which sentences a busy reader would skip. The color-coded highlights make weak spots visible in seconds, and fixing them is the fastest way to tighten a blog post or newsletter. A desktop app exists as a one-time $19.99 purchase for offline work, and a Plus plan adds AI rewriting suggestions, but the free web editor is complete for its core job. If your writing problem is clarity rather than commas, start here.
4. ProWritingAid — style reports for long documents
ProWritingAid goes deeper than line-by-line checking. It generates full style reports: sentence-length variation, overused words, passive voice frequency, and readability scores across an entire manuscript or report. Novelists, bloggers, and academics editing long documents get analysis no basic checker provides.
The free plan is the most limited here — checks are capped around 500 words per run with a daily limit on report runs — so it is not a casual everyday tool. Think of it as a periodic deep audit: draft in your normal checker, then run chapters through ProWritingAid before publishing. Premium is $10 per month billed annually, or $120 per year, with a lifetime option at $399. Plagiarism checks are sold separately. If your documents run to thousands of words, the depth is worth the free tier's friction.
5. Scribbr — the free checker for students
Scribbr's grammar checker is completely free with unlimited text checking and no ads, which is rare in this category. It supports multiple English dialects and is built by an academic editing company, so it handles citations-adjacent writing, essays, and research papers well.
For students and researchers, the combination of unlimited checks and academic DNA makes it the default. It will not match Grammarly's tone feedback or LanguageTool's multilingual reach, but for English academic writing at zero cost and zero signup friction, it is hard to argue with. Pair it with QuillBot's citation features and paraphraser for a fully free student editing stack.
6. Ginger — the budget all-rounder for ESL writers
Ginger plays in Grammarly's lane with less polish: grammar and spell checking, sentence rephrasing, and built-in translation. Its free plan covers basic checks, and its explanations are written for people learning English, which means it teaches while it corrects rather than just swapping words.
If English is not your first language, that teaching angle matters. Premium runs around $7 per month billed annually, undercutting Grammarly significantly. It will not replace a dedicated checker for advanced style work, but as a daily driver for emails, messages, and social posts in a second language, it is a fair budget alternative.
7. Microsoft Editor — the one already installed
If you live in Microsoft 365, you may not need a new tool. Microsoft Editor is built into Edge and Word, free with a Microsoft account, and uses AI for grammar, spelling, and refinement suggestions across the web via the browser extension. There is no separate signup and nothing to install beyond what you already have.
It is not the smartest checker here, and its suggestions skew conservative, but coverage is its superpower: it works wherever Edge does, including web apps where extensions from smaller vendors sometimes break. For office workers and students on school accounts, it is the zero-friction option that is already on.
How to pick the right one
Match the tool to the job, not the brand. One checker for everything is the habit to break. A setup that costs nothing and covers almost every need: LanguageTool as the daily driver for its generous free tier and 30-plus languages, Hemingway for the final readability pass, and QuillBot for rewriting stubborn sentences. That trio replaces Grammarly Pro's core value for most writers at zero dollars.
Students should swap in Scribbr for unlimited academic checks. Long-form writers should add ProWritingAid's free audits before publishing anything book-length. ESL writers get the most mileage from Ginger's explanations plus QuillBot's paraphraser. And if you already pay for Microsoft 365, let Microsoft Editor handle the everyday background checking and save the specialists for drafts that matter.