Alternatives

Products that do what D3 Kata does

Practice DDD, CQRS & Event Sourcing in Ruby with AI feedback

1. 1SA
   Softcover – A publishing platform from the author of the Rails Tutorial▲208

   2014 · softcover.io

2. 2AR
   Automated Rails development with Prelang▲229

   2014 · prelang.com

3. 3PA
   PumpkinDB, an event sourcing database engine▲190

   2017 · pumpkindb.org

4. 4LW
   Learn what DDD, CQRS, and event-sourcing are all about▲138

   2017 · docs.wolkenkit.io

5. 5
   Prelang▲82

   Automatic Rails Development

   2014

6. 6UA
   Upmin – An Admin Framework for Ruby on Rails▲140

   2014 · upmin.com

7. 7BR
   BestRuby – Ruby Tricks, Idioms, Refactorings and Best Practices▲92

   2015 · best-ruby.com

8. 8OA
   Omniref - a better search site for Ruby documentation▲110

   2013 · omniref.com

9. 9TU
   TodoMVC using DDD, CQRS and event-sourcing▲12

   2017 · github.com

10. 10MA
    My Attempt to Organize the World of AI Dev Tools▲101

    I've been exploring the (not so=) amazing potential of AI in coding and have compiled a list of tools. From AI-powered IDEs to code generators, this resource is my contribution to the community. I'm still on the fence about including txt2sql projects, as their functionality seems too basic to me. And I'm personally maintaining this, so your feedback is wellcome.

    2025 · aicode.danvoronov.com

11. 11IB
    I built a self-hosted error tracker in Rails▲75

    This project is inspired by 37signals’ ONCE idea. I replicated the whole process and have already sold a few copies (the testimonials are real).

    Oct 2025 · telebugs.com

12. 12DA
    Demystifying Advanced RAG Pipelines▲131

    I've built an advanced RAG (Retrieval-Augmented Generation) pipeline from scratch to demystify the complex mechanics of modern LLM-powered Question Answering systems. This repository features: -- An implementation of a sub-question query engine from scratch to answer complex user questions. -- Illustrative explanations that unveil the inner workings of the system. -- An analysis of the challenges I faced while working with the system, like prompt engineering and cost estimation. -- Qualitative comparison with similar frameworks like LlamaIndex, offering a broader perspective. Key Takeaway:…

    2023 · github.com

13. 13KP
    Kiba Pro v2 – Commercial Ruby Extensions to Kiba ETL▲55

    2020 · thibautbarrere.com

14. 14VA
    Vesper, a plug and play Ruby web framework (Sinatra + Rack + Plugins)▲40

    2012 · vesperapps.com

15. 15EA
    Enforced, Annotated Schema for Ruby Sequel Models▲22

    2015 · github.com

16. 16WA
    WitBot – A Ruby Client for wit.ai▲23

    2016 · github.com

17. 17DE
    Documentation Engine for Rails Apps▲25

    2014 · adamcooke.io

18. 18KA
    Kiba, a lightweight Ruby ETL framework▲19

    2015 · kiba-etl.org

19. 19RA
    RubyProctor, a website for developing Rubocop rules▲18

    2017 · rubyproctor.com

20. 20JA
    JQL – A JSON Query Language CLI Tool Built with Rust▲25

    2020 · crates.io

21. 21AE
    An educational Local Qwen3 LLM Inference project written in Rust▲15

    2025 · github.com

22. 22RE
    Rhino editor – a TipTap editor made for Ruby on Rails▲5

    2025 · rhino-editor.vercel.app

23. 23AB
    A book on Building API's with Rails▲8

    2014 · apionrails.icalialabs.com

24. 24JA
    Jql – A JSON Query Language CLI Tool Written in Rust▲9

    2018 · github.com

Ranked by how close each launch is in meaning, then by votes. Refine with a description →