Life & fun · alternatives · 2026

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. The Y Combinator Codex launched in 2021; newer entries below may have overtaken it.

1. 1
   Y Combinator Startups▲159

   An Interactive Database

   2014 · its alternatives →

2. 2ML
   My latest Y Combinator application▲5

   2011 · thypope.posterous.com · its alternatives →

3. 3
   A Y Combinator for Objective-C▲97

   A Y-Combinator for Objective-C. Contribute to jballanc/objc-ycomb development by creating an account on GitHub.

   2011 · github.com · its alternatives →

4. 4
   The Macro Y Combinator - Michael Moritz▲104

   How Sequoia excelled for 40 years

   2016 · soundcloud.com · its alternatives →

5. 5
   TheFamily: Sam Altman, President of Y Combinator▲146

   Sam Altman on Y Combinator and importance of AI

   2016 · soundcloud.com · its alternatives →

6. 6
   Re/code Decode - Y Combinator's Sam Altman▲92

   and the internet of things and Google

   2015 · serve.castfire.com · its alternatives →

7. 7
   Dorm Room Tycoon - Sam Altman▲73

   Sam outlines the future of Y Combinator

   2015 · feedproxy.google.com · its alternatives →

8. 8
   Purely Functional Data Structures▲61

   A guide to functional programming

   2016 · amazon.com · its alternatives →

9. 9
   Grokking Algorithms▲77

   An illustrated guide for programmers

   2016 · amazon.com · its alternatives →

10. 10
    An Elementary Introduction to the Wolfram Language▲60

    Stephen Wolfram's new book on the Wolfram Language

    2015 · wolfram.com · its alternatives →

11. 11VA
    Visions – An Idea Log Based on Y Combinator▲7

    2016 · getvisionsapp.com · its alternatives →

12. 12
    yggy▲83

    The AI knowledge graph that builds itself

    10d ago · app.yggy.tech · its alternatives →

13. 13
    A Pattern Language▲68

    Applying Patterns to Solve Design Problems

    2015 · amazon.com · its alternatives →

14. 14BC
    Binary Counting▲8

    2022 · bits.kodare.com · its alternatives →

15. 15
    Y Combinator Research Lab▲9

    A non-profit research institution developed by YC

    2015 · ycombinator.com · its alternatives →

16. 16DL
    Deep Learning 33M data points using a few lines of YAML▲7

    2020 · blog.maiot.io · its alternatives →

17. 17
    Deterministic Style Sheets▲6

    2018 · twitter.com · its alternatives →

18. 18
    The Simplest ML API▲7

    2021 · doc.clickup.com · its alternatives →

19. 19ML
    Machine Learning Algorithms▲5

    2016 · recalll.co · its alternatives →

20. 20AC
    A collection of tiny web tools and calculators▲5

    2022 · thetinytools.com · its alternatives →

21. 21RA
    Recursi – a recursive memory/logic puzzle▲5

    2014 · lkozma.net · its alternatives →

22. 22CO
    Coast on Clojure: A full stack framework with a catchy name▲8

    2017 · medium.com · its alternatives →

23. 23
    Haystack – Simple graph abstraction over Hbase▲9

    2015 · github.com · its alternatives →

24. 24PA
    Plisqin, an SQL generator written in Racket▲7

    2018 · docs.racket-lang.org · 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 →