Dev tools · alternatives · 2026

24 alternatives to Lexicon

Lexicon is a rich-text editor with grammar checking and AI writing tools (rewriting, tone shifting, and summarizing) that run entirely on your machine. No account, no API calls, and nothing uploaded. Grammar/spelling/punctuation checking runs through LanguageTool locally; the AI tools run through a small quantized model bundled with the app via llama.cpp, or your own Ollama server if you already run one. It's a desktop app installer for Windows and macOS on the releases page, with an in-app auto-updater. Check it out: https://lexicon-writer.pages.dev/ MIT licensed.…

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1. 1
   Lexicon▲201

   An open-source, customizable mobile app for communities

   2021 · its alternatives →

2. 2
   Lexicon version 2▲16

   With native push notifications & email deep linking

   2023 · its alternatives →

3. 3
   Gramara▲273

   AI grammar correction

   2020 · gramara.com · its alternatives →

4. 4
   Fluently Beta▲500

   Write fluently in any language

   2020 · fluently.so · its alternatives →

5. 5
   LexiconOS▲11

   Get AI answers, save citations, and organize knowledge

   2025 · apps.apple.com · its alternatives →

6. 6
   Lexi: write well by talking▲96

   iOS AI voice keyboard

   2023 · apps.apple.com · its alternatives →

7. 7
   Lex▲452

   AI-powered word processor, to help you write faster

   2022 · lex.page · its alternatives →

8. 8
   Refine – A Local Alternative to Grammarly▲408

   Fix grammar, rewrite sentences, translate text, and get clear explanations across your Mac apps. Do it all offline with local AI.

   2025 · refine.sh · its alternatives →

9. 9
   GrammarPaw ▲261

   AI writing assistant for Mac

   2025 · apps.apple.com · its alternatives →

10. 10
    AI Grammar Checker & Rewriter for Figma▲338

    Grammar check and rewriting in 6 languages

    2023 · figma.com · its alternatives →

11. 11
    Krammar▲93

    Your Grammar nazi but friendly friend

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

12. 12
    Lexicon AI▲3

    AI-powered vocabulary journal for SAT and IELTS prep

    Aug 2026 · lexicon-ai-journal.vercel.app · its alternatives →

13. 13
    GrammarBot▲183

    Write flawless English with AI, no subscriptions, offline

    2024 · grammarbot.app · its alternatives →

14. 14
    Lexicon▲1

    Speak, Transcribe, Learn

    2024 · lexiconmeet.com · its alternatives →

15. 15
    Fluently▲159

    Write fluently in any language

    2021 · fluently.so · its alternatives →

16. 16
    Fathom Lexicon▲69

    Extract what matters most in text and build your Lexicon

    2023 · its alternatives →

17. 17
    Deep Grammar▲128

    Grammar checker based on deep learning

    2016 · its alternatives →

18. 18
    Grammit – Local-only AI grammar checker (Chrome extension)▲34

    Hey HN, I wanted a grammar checker that didn’t send my writing to someone's servers, so we built Grammit, a Chrome extension that runs grammar checks locally using an LLM. Your text never leaves your computer during checking. Here’s a 2-minute overview: https://www.loom.com/share/baf501ee6cf14a919a7384128246ed67 Because it uses an LLM, it catches more than spelling and grammar. For example, it can correct some wrong statements like “The first US president was Benjamin Franklin.” Grammit also includes an in-page writing assistant that can rephrase or draft new text. It…

    2025 · chromewebstore.google.com · its alternatives →

19. 19
    ProseMirror▲120

    A toolkit for building rich-text editors on the web

    2017 · prosemirror.net · its alternatives →

20. 20
    Grammify▲54

    Open source Grammarly alternative, using your own OpenAI API

    2023 · docs.google.com · its alternatives →

21. 21
    Text Enhancer AI▲113

    Enhance any text content in seconds for free

    2024 · text-enhancer.com · its alternatives →

22. 22
    Lexiconomy – Decentralized and Economized Dictionary▲30

    2019 · lexiconomy.org · its alternatives →

23. 23
    Leximio▲68

    Create your own lexicon

    2023 · apps.apple.com · its alternatives →

24. 24LA
    Lexiscore – a nutritional label for food for thought▲66

    2021 · paulbricman.com · 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 →