Alternatives

Products that do what I made an open-source alternative to LangChain does

Really appreciate any feedback! :)

1. 1LA
   Legion, an as-simple-as-possible blockchain server written in Haskell▲239

   2017 · github.com

2. 2AO
   An open-source financial ledger API written in Clojure▲125

   2020 · github.com

3. 3AB
   A Browser-based Blockchain▲186

   2017 · nimiq.com

4. 4LC
   LitePaper.com – Duolingo for Blockchain▲8

   2018 · litepaper.com

5. 5IG
   I got fed up with LangChain so I made a simple alternative for AI apps▲6

   2023 · github.com

6. 6IS
   I started a repo for sharing algorithm implementations▲52

   Everything that would be here is in the README. I hope this gets big, it has tons of potential.

   2013 · github.com

7. 7OA
   OJ – A Clojure library for talking to your database▲37

   2014 · github.com

8. 8CA
   Chaskiq – an open source alternative to Intercom, Drift and others▲32

   2020 · github.com

9. 9MA
   ModelFusion – Alternative to Langchain.js▲5

   2023 · modelfusion.dev

10. 10OS
    Open-sourcing our large Clojure(Script) Re-frame/Hasura web app▲21

    2020 · github.com

11. 11MF
    My first game – CryptoEmpire.io :)▲13

    I know everyone is a bit burned out on blockchain and cryptocurrency related stuff around these parts, but I've been working on as a side project for the last few months and thought you guys might be interested: https://cryptoempire.io/ It's still a bit buggy and incomplete (the mobile ux needs a lot of work, the leaderboard isn't functional yet, etc.), but I've reached a point where I'm not totally ashamed of sharing it :) Any feedback would be most welcome!

    2018

12. 12AC
    A copy of LangChain swift for iOS or macOS applications▲6

    2023 · github.com

13. 13RA
    Runiq, a little Lisp-inspired language that runs on JavaScript▲24

    2015 · github.com

14. 14HA
    hulk, an in-browser JSON editor▲25

    2013 · github.com

15. 15HD
    Hello distributed language user guide [pdf]▲18

    2015 · amsdec.com

16. 16LG
    LanguageTool – Grammarly Alternative (open source, multilingual)▲7

    2019 · languagetool.org

17. 17WA
    Walletjs – A little library to handle money amounts▲23

    2017 · github.com

18. 18IM
    I made a crossword app for language learners▲8

    Hi HN! In the last couple of weeks I've been working on Cranki: Cranki = Crosswords + Anki. (It's a stupid name tbh, haha) I like doing crosswords in Spanish (to learn vocab) but none of the apps out there allowed me to use my own list of words that I come across. So I built one instead. It's entirely client-side. No server, no database, no accounts, etc. Your words and stats are stored in local storage. I built this for myself but let me know if you like it!

    Apr 2026 · cranki.app

19. 19TP
    Translation platform for Android, free and open-source▲6

    2014 · localize.im

20. 20MY
    Minimalist yet Powerful Internationalization Library▲5

    2019 · github.com

21. 21IM
    I made an open-source Replit▲9

    I spent the past few weeks making an open source cloud code editing environment with an AI copilot and multiplayer collaboration! It's fully self-hostable in 5-10 minutes. There's a lot of minor improvements to be made, and some are already listed in the Github issues. Let me know what you think and feel free to try it out.

    2024 · github.com

22. 22MP
    My project Se.cret.ly --one-use short links for secret resources▲5

    My first "real" web app! I appreciate any comments/suggestions.<p>Also I am available for hire. Contact me at www.sambolgert.com

    2012 · se.cret.ly

23. 23AD
    A dead simple introduction to the blockchain (with ~90 line JavaScript demo)▲6

    2017 · sgoedecke.github.io

24. 24BA
    Bodega, a simple state store for js-based apps (GitHub.com)▲5

    2018 · github.com

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