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Life & fun · alternatives · 2026

24 alternatives to A polyglot repository for ProjectEuler answers

Polyglot solutions for www.projecteuler.net mathematical challenges - DestructHub/ProjectEuler

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. A polyglot repository for ProjectEuler answers launched in 2017; newer entries below may have overtaken it.

  1. 1IW

    Good math problems are hidden inside textbooks and online documents. To keep up with all the sources in the world is hard. For someone who just wants to continuously solve problems, finding and going through all the sources feels like a hassle. I wished for a website that could just dump all the math problems available in the world out there. And if I could filter the problems by topics, that would be beautiful. teachyourselfmath is a side project that was born out of this need. At its core, it is a math PDF extraction engine. The engine has some machine learning going on behind the scenes…

    2024 · teachyourselfmath.app · its alternatives →

  2. 2

    A curated list of great puzzles. Contribute to sharkdp/great-puzzles development by creating an account on GitHub.

    2015 · github.com · its alternatives →

  3. 3

    Some basic javascript coding challenges and interview questions - kolodny/exercises

    2015 · github.com · its alternatives →

  4. 4

    Problem Solving. Contribute to sangupta/ps development by creating an account on GitHub.

    2016 · github.com · its alternatives →

  5. 5

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

    2013 · github.com · its alternatives →

  6. 6

    The power of the Wolfram language in the cloud

    2014 · wolfram.com · its alternatives →

  7. 7

    Beautifully designed puzzle of a gradient

    2015 · areaware.com · its alternatives →

  8. 8

    Game for designers: guess the right RGB color

    2015 · rgbchallenge.com · its alternatives →

  9. 9

    Wolfram-curated computable datasets

    2017 · datarepository.wolframcloud.com · its alternatives →

  10. 10
    Treksit▲65

    Put your logic to test with graph theory

    2021 · its alternatives →

  11. 11

    I've been playing with this for quite some time and I think it's finally ready for public consumption. All feedback welcome.

    2025 · madmonk13.github.io · its alternatives →

  12. 12

    A curated list of Monte Carlo tree search papers with implementations. - GitHub - benedekrozemberczki/awesome-monte-carlo-tree-search-papers: A curated list of Monte Carlo tree search papers with implementations.

    2020 · github.com · its alternatives →

  13. 13

    An Erlang library for carefully refactoring critical paths - sthadka/fuge

    2016 · github.com · its alternatives →

  14. 14CS

    I started an experimental series, "console.solve", on mini javascript challenges a few months back and received good feedbacks on it. So I created a [second one](https://colintoh.com/console-solve/issue-2?utm_source=colint...) this month. Not sure anyone here will be interested as it's not exactly pro-level stuff. But if you have an hour to spare, it can be a good distraction. For those who are interested, here was the [first challenge](https://colintoh.com/console-solve/issue-1?utm_source=colint...).

    2017 · its alternatives →

  15. 15

    Q12 is a new web-based 2D parametric drawing tool built specifically for geometric problem solving, for playing interactive "what if" games with drawings, and for the design and optimization of mechanisms. Q12 has the usual set of drawing constraints found in other CAD tools (e.g. "lines are parallel") but also supports inequality constraints, area constraints, and arbitrary expressions between geometric quantities. We built Q12 to solve problems like those below, after finding that existing CAD systems couldn't handle them well: * Given dimensions on a surveyor's map, figure out if the…

    Feb 2026 · q12.app · its alternatives →

  16. 16PA

    Hey everyone, I was wondering if a Poincaré disk would be able to usefully show the local structure of a graph while showing most of one I used a collection of ML papers to explore this

    Mar 2026 · paperverse.net · its alternatives →

  17. 17BY

    Hey HN! I spent the last year building a programming challenges site targeted at intermediate/advanced programmers [1]. Challenges follow the "Build your own X" format, where you learn about a popular open source tool by building a small version yourself (popularized by this Github repo [2]). The primary difference compared to other coding challenge websites like Codecademy, HackerRank, Exercism etc. is that we offer real-world programming challenges - no inverting binary trees here! I've posted about this multiple times here before, but haven't managed to gather much interest. Trying…

    2021 · its alternatives →

  18. 18BA

    rts-blog : A blog about creating an RTS in WebGL

    2017 · emnh.github.io · its alternatives →

  19. 19

    Graph of subreddits. Contribute to ghgr/reddit-graph development by creating an account on GitHub.

    2018 · github.com · its alternatives →

  20. 20

    Parser combinator library for RIR statistics exchange files - GitHub - ip-num-tools/ristex: Parser combinator library for RIR statistics exchange files

    2019 · github.com · its alternatives →

  21. 21

    Hi there, I've created this side project to make it easier to find interesting repositories using AI. There's still a lot of work to be done to improve it, so any suggestions for enhancements would be greatly appreciated. Thank you!

    2024 · awesome-repositories.com · its alternatives →

  22. 22

    Collection of Go examples for beginner back end developers - peterlamar/go-examples

    2019 · github.com · its alternatives →

  23. 23

    A graph drawing tool for large graph visualization. - GitHub - marckhoury/mars: A graph drawing tool for large graph visualization.

    2014 · github.com · its alternatives →

  24. 24

    Repository for Kuzushiji-MNIST, Kuzushiji-49, and Kuzushiji-Kanji - rois-codh/kmnist

    2018 · github.com · its alternatives →

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