Work · alternatives · 2026

24 alternatives to Karenina IO: Polyglot AI Grammar Checker

AI proofreader for Spanish English French Chinese Japanese..

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Karenina IO: Polyglot AI Grammar Checker launched in 2020; newer entries below may have overtaken it.

1. 1
   AI Grammar Checker & Rewriter for Figma▲338

   Grammar check and rewriting in 6 languages

   2023 · its alternatives →

2. 2
   Gramara▲273

   AI grammar correction

   2020 · its alternatives →

3. 3
   Lingoedit 2.0▲457

   Simplify translation and editing: your AI language companion

   2024 · its alternatives →

4. 4
   Fluent 2.0▲225

   An AI language tutor in your browser

   2023 · its alternatives →

5. 5
   Oyomi▲83

   Machine learning based Japanese reader & grammar analyzer

   2023 · its alternatives →

6. 6
   Polyglot AI▲74

   Practice a foreign language with a chatbot

   2021 · its alternatives →

7. 7
   GrammarBot▲183

   Write flawless English with AI, no subscriptions, offline

   2024 · its alternatives →

8. 8
   Douzo▲127

   Free Japanese typing practice organized by JLPT level

   Mar 2026 · typingdouzo.com · its alternatives →

9. 9
   Fluently▲87

   AI subtitles & translations for YouTube. 20+ Languages.

   Apr 2026 · usefluently.app · its alternatives →

10. 10
    Fluent▲110

    AI writing assistant for macOS

    2025 · fluentmac.app · its alternatives →

11. 11
    Polyglotta▲126

    Translate and learn many languages at once

    Jan 2026 · polyglotta.app · its alternatives →

12. 12
    Engram▲97

    AI-powered proofreader optimized for non-native speakers

    2023 · its alternatives →

13. 13IB
    I built an AI language teacher to get you speaking▲82

    Hello Hacker News, When learning foreign languages, I made the most progress by speaking them throughout the day, every day. So I made a site where you can *speak* to an AI language teacher to practice both listening and speaking. # The product *What I have now:* * Multilingual speech recognition: You can ask a question in English and get an answer in your target language. * Feedback on your grammar. * Suggestions: See examples of what to say next to keep the conversation flowing. * Speed: Choose a lower speed for beginners or a faster one for advanced levels. * Translations: Click to see a…

    2023 · gliglish.com · its alternatives →

14. 14
    Rewrait for Windows▲84

    Write it once, perfect it fast.

    2025 · rewrait.com · its alternatives →

15. 15
    Correct My Grammar▲77

    AI based tool to correct your grammar & rephrase sentences

    2023 · its alternatives →

16. 16
    AI Rewrite & Spell Checker for Miro▲34

    AI magic for Miro: perfect grammar, enhanced creativity

    2023 · its alternatives →

17. 17
    Krammar▲93

    Your Grammar nazi but friendly friend

    2024 · krammar.kieng.io.vn · its alternatives →

18. 18
    Doctranslate.io - Audio Translation▲68

    Globalize Knowledge

    2025 · doctranslate.io · its alternatives →

19. 19
    Write better with AI Writing Tool▲68

    Grammar Check, Spelling and Translate

    2023 · its alternatives →

20. 20
    Fluento▲65

    The world's smartest language learning social network

    2023 · its alternatives →

21. 21
    Trinka AI - Grammar Checker Tool▲10

    AI-based writing assistant for academic & technical writing

    2021 · its alternatives →

22. 22
    Engram▲14

    Elevate your English w/ AI optimized for non-native speakers

    2024 · its alternatives →

23. 23
    SubtleAI▲31

    Transform Your Videos With AI-Powered Audio & Subtitles

    2025 · subtleai.leanai.ventures · its alternatives →

24. 24
    Korr IA▲5

    French/English AI editor that never sees your text

    Jul 2026 · korr-sandy.vercel.app · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →