
Free / Open-sourceEnterprise-grade neural machine translation, AI writing refinement, and real-time voice translation across thirty-plus global languages.

Grammarly records 58,867,412 monthly visits with -1.5% month-over-month growth and Freemium pricing. NeuroSpell records 0 monthly visits with -100% growth and Contact for Pricing pricing.

Deep-learning auto-correction for 40+ languages, deployable on-premise
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | grammarly.com | neurospell.com |
| Pricing Model | Freemium | Contact for Pricing |
| Monthly Visits | 58.87M (58,867,412) | 0 (0) |
| MoM Traffic Delta |
| -916.08K (-1.5%) |
| -3.54K (-100%) |
| Primary Market & Share | 🇺🇸 United States (51.9%) | 🌐 Global (—) |
|---|
| Direct Visits / mo | 25.4M | 0 |
|---|
| User Rating | 4.4 | 4.3 |
|---|
| Supported Platforms | Website | Website |
|---|

Cross-platform AI writing assistant delivering real-time grammar correction, tone alignment, authorship tracking, and team style guides.
Works natively inside Chrome, Safari, Firefox, Edge, Windows, Mac, Google Docs, MS Office, and mobile keyboards to flag grammar mistakes, rewrite tangled sentences, and shift tone toward confident, empathetic, or executive registers.
Deploys contextual AI agents that predict how a target audience will react to a draft, locate credible supporting citations, grade essays against rubric criteria, and generate drafts using up to 2,000 monthly prompts on Pro.
Scans text against billions of web pages and academic databases for accidental plagiarism, detects AI-generated passages, and logs transparent document provenance via Authorship reports in Google Docs and Word.
Enables teams on Pro and Enterprise plans to codify company terminology, ban deprecated jargon, enforce inclusive language, insert shared Snippets, and surface internal company definitions inline.

Deep-learning auto-correction for 40+ languages, deployable on-premise
The engine goes beyond flagging mistakes: it rewrites typos, phonetic errors, fused or split words, elisions, and non-native mistakes automatically.
Neural models cover languages from French, English, and Spanish to Arabic, Hindi, Turkish, Ukrainian, and many more, with varying corpus sizes per language.
Deploy NeuroSpell within your own infrastructure so that no data is sent outside your intranet.
The engine detects and protects named entities such as people, places, and acronyms so they are not wrongly altered.

Free / Open-sourceEnterprise-grade neural machine translation, AI writing refinement, and real-time voice translation across thirty-plus global languages.

Free / Open-sourceParaphrase, proofread and summarize text with an AI writing workspace
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Free / Open-sourceAcademic proofreading, plagiarism checking and AI-powered writing tools in one place
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Free / Open-sourceAI grammar, spelling and style checker for 30+ languages

Free / Open-sourceA storytelling toolkit that checks your grammar and coaches your craft
Free / Open-sourceAI translation for text, images, documents and speech in 100+ languages
SpecialistAI academic writing assistant that edits, cites, and checks your manuscript right where you write
Free / Open-sourceWrite bolder, clearer prose with instant readability and grammar feedback

Great for sentence-level tone adjustments and rewriting, but less comprehensive for standalone grammar rules and style guides.

AI writing assistant with autocomplete, research, and a Chrome extension

Free / Open-sourcePrivacy-first AI writing and grammar assistant for academic and technical writing


Offers similar inline grammar correction and snippets, but with a smaller ecosystem of browser extensions and integrations.
Free / Open-sourceEnterprise-grade neural machine translation, AI writing refinement, and real-time voice translation across thirty-plus global languages.
Free / Open-sourceParaphrase, proofread and summarize text with an AI writing workspace
Free / Open-sourceAcademic proofreading, plagiarism checking and AI-powered writing tools in one place
Free / Open-sourceAI grammar, spelling and style checker for 30+ languages
Free / Open-sourceA storytelling toolkit that checks your grammar and coaches your craft
Free / Open-sourceAI translation for text, images, documents and speech in 100+ languages
SpecialistAI academic writing assistant that edits, cites, and checks your manuscript right where you write
Free / Open-sourceWrite bolder, clearer prose with instant readability and grammar feedback
Great for sentence-level tone adjustments and rewriting, but less comprehensive for standalone grammar rules and style guides.
AI writing assistant with autocomplete, research, and a Chrome extension
Free / Open-sourcePrivacy-first AI writing and grammar assistant for academic and technical writing
Offers similar inline grammar correction and snippets, but with a smaller ecosystem of browser extensions and integrations.