Writing Assistant for Non-Native English Speakers
Diglot is built for people who think in one language and write in English. You draft bilingually, fix the lines that give you away as non-native — the false cognate, the dropped article, the translated rhythm — and get grammar feedback that points back to your first language, all in one editor instead of a translator, a grammar checker, and a rewriter open in three tabs.
*No credit card required
Methods and Data Sources
The study draws on a panel of 42 jurisdictions observed quarterly between 2019 and 2025.
Where a jurisdiction changed its reporting basis, the earlier series is retained and flagged rather than silently rebased. Two cases required manual reconciliation (Meyer, 2019).
Limitations
Quarterly reporting hides within-quarter variance, so short shocks are smoothed. The panel is also unbalanced after 2023, when three jurisdictions stopped publishing.
Why non-native writers need more than a grammar checker
The trouble usually isn’t typos — it’s that your English wears the fingerprint of your first language. A Spanish speaker writes “actually” meaning “currently.” A Korean or Russian writer leaves out articles the language never had. A Chinese writer lets tense go flat. The sentences are grammatical and still read translated. Generic checkers flag the surface and miss the cause. Diglot reads these as L1-transfer patterns and explains the fix, so your English stops sounding secondhand.
Apologetic fluff & boilerplate
Defaults to verbose, deferential openings ("I hope this email finds you well", "I am writing to kindly inquire"). Reads as subordinate and wastes senior stakeholders' time.
Native-speaker syntax bias
Catches basic comma splices and spelling typos, but completely misses L1 cultural transfers, Japanese Keigo servility, Spanish false cognates, or tone mismatch.
Isolated sentence translation
Translates sentences accurately in isolation, but lacks document-level tone calibration, context memory, and consistent business terminology across releases.
Calibrated executive workspace
In-place three-tier translation, register calibration, L1-transfer neutralization, and persistent translation memory inside a single focused editor.
Built around real bilingual business workflows
Everything non-native professionals need to write, translate, and verify high-stakes English in one place.
Register & Formality Calibrator
Calibrate writing to target US vs UK executive norms. Neutralize Keigo-style subservience, legalese filler, and culturally awkward greetings before sending to leadership.
- Senior Executive vs Peer tone tuning
- Eliminates "kindly", "as per", and "revert"
- Action-oriented CTA phrasing
Three-Tier Inline Translation
Translate difficult words or full sentences inline without leaving the editor. View Literal, Idiomatic, and Executive Business translations side-by-side.
- In-place paragraph translation
- Literal vs Idiomatic vs Executive tiers
- Preserves source context and document formatting
Persistent Translation Memory
Brand names, product terms, contractual clauses, and company acronyms stay 100% consistent across every email, proposal, and report you write.
- Locked vocabulary across documents
- Shared team glossaries
- Zero terminology drift between releases
AI Cowriter for Business Formats
Transform rough bullet points, meeting notes, or native-language thoughts into polished client emails, status memos, and executive decks in seconds.
- Format-specific business templates
- Instant expansion of rough bullet notes
- Calibrated for non-native thinking habits
One connected workflow from raw draft to final deliverable
Move from bilingual rough ideas to polished English in one calm flow instead of stitching together separate tools.
Think in your language first
Start from native-language thoughts or documents instead of forcing English from the first sentence.
Produce English in the same editor
Translate and draft together, so the move from your language into English never leaves the document.
Fix what sounds translated
Diglot targets literal calques, awkward collocations, and translated rhythm, rewriting them into natural English while keeping your meaning.
Learn the pattern, not just the fix
Each correction carries the L1 reason behind it, so your first drafts get cleaner over time.
Built for high-stakes business communicators
Diglot works best when English is your delivery language, but not always your thinking language.
International students
Move from rough documents to cleaner English submissions with structure, paraphrasing, grammar review, and originality checks in one place.
Multilingual professionals
Write faster for work without sounding translated. Diglot helps you refine tone, clarity, and confidence before you hit send.
Bilingual creators
Turn ideas that start in your native language into natural English copy without bouncing between translation and rewrite tools.
Confidentiality & editorial standards
Your business drafts, customer proposals, and internal communications belong strictly to your team.
Zero model training on your data
Your drafts, emails, and translations are never used to train public AI models. Data is encrypted in transit and at rest with strict multi-tenant isolation.
Calibrated specifically for non-native professionals
Examples, register models, and workflow conventions are shaped for managers, engineers, and consultants who need confident English output without losing meaning.
Reviewed by Diglot Editorial Team
Last reviewed on July 18, 2026. We regularly update guidelines as international business English standards and corporate communication norms evolve.
Frequently asked questions
Everything you need to know before getting started.
Is Diglot made for non-native English speakers?
Yes — that’s precisely who it’s for. Diglot treats non-native English as carrying predictable patterns from your first language and corrects them with the reason attached, rather than flagging them like random slips. It also keeps translation, rewriting, and grammar in one editor, which is the workflow non-native writers actually run.
How is this different from Grammarly?
Grammarly is aimed at people who already think in English and want it tidier. Diglot is aimed at people who think in another language first. It supports bilingual drafting, ties each correction back to your first language, and hunts specifically for translated-sounding phrasing rather than surface grammar alone. If you’re a native English writer, Grammarly is fine; if you’re not, Diglot fits the actual problem better.
Can it make my English sound more natural?
Yes — it’s one of the main jobs. Diglot rewrites literal translations, off collocations, and translated rhythm into natural English and tells you why the original read wrong. Because the feedback is grounded in your L1 rather than generic rules, your first drafts keep getting closer over time.
Which first languages does Diglot support?
Korean, Chinese, Japanese, Spanish, Russian, and Arabic get the deepest treatment, with contrastive grammar data behind the explanations; fourteen more languages have partial coverage. Any language pair works for drafting and translation — the L1-aware detail is simply richest for those six, and the list keeps growing.
Is Diglot free to use?
Yes. A free plan covers bilingual editing, grammar, translation, and paraphrasing. Spark ($19/mo) and Pro ($34/mo) raise the quotas, add premium models, and include the full Authorship Certificate.
Explore all Diglot workflows
Discover specialized tools built to support your English writing from rough notes to polished delivery.
Draft, refine, and rewrite English with AI support built for non-native speakers.
Translate, compare, and edit multilingual text in one writing workflow.
Catch grammar, spelling, and punctuation issues while you write in English.
Rewrite sentences, improve fluency, and keep your original meaning clear.
Scan content for overlap and protect originality before submission or publishing.
Start from ready-made structures for essays, emails, reports, and proposals.
Cryptographically signed proof you wrote your own text — defends against false AI-flag accusations.
Writing in English when it's not your first language is hard — but not because your ideas are weak. Here are 7 practical strategies to write faster, clearer, and more confidently.
Most "Grammarly alternatives" are monolingual English engines that assume you already think in English. For non-native writers, the real need is bilingual, L1-aware help. Here are eight tools compared on the axes that actually matter.
For non-native professionals, the barrier to credible business English is not grammar — it is register, directness, and concision. Here are the few learnable conventions that fix most of it, with before-and-after examples you can use today.
Write in your language,
publish in English
Move from rough bilingual drafts to clearer English in one connected writing workflow.
Methods and Data Sources
The study draws on a panel of 42 jurisdictions observed quarterly between 2019 and 2025.
Where a jurisdiction changed its reporting basis, the earlier series is retained and flagged rather than silently rebased. Two cases required manual reconciliation (Meyer, 2019).
Limitations
Quarterly reporting hides within-quarter variance, so short shocks are smoothed. The panel is also unbalanced after 2023, when three jurisdictions stopped publishing.
Writing English as a non-native speaker isn’t mostly a grammar problem — it’s a transfer problem. Your English inherits the shape of your first language. A Korean or Russian writer drops articles the language never used. ” A Chinese writer lets tense flatten out. Everyone produces the translated rhythm that makes prose feel secondhand. Generic tools flag the symptom on the surface and skip the cause, so you fix the same thing paper after paper. Diglot is built for non-native writers from the ground up.
It lets you draft in your first language and produce the English in the same editor, it targets the exact phrasing that reads translated, and it attaches the reason your L1 caused each error — so the feedback teaches rather than just marks. Translation, rewriting, grammar, and originality checks share one document, so you’re not copy-pasting between a translator, a grammar checker, and a paraphraser and losing your place each time. What comes out reads as your own voice in English, not a translation of it.
