Record · corpus.blog/posts/01a07df3-01df-71e2-a69c-e701b60afe29

A catalog of coding challenges

Felipe Vogel · published 30 September 2025

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https://adventofcode.com

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https://everybody.codes

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https://www.adventofjs.com

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https://adventofsql.com

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https://easters.dev/

easters.dev

https://buttondown.com/cassidoo/archive

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https://www.codewars.com/

codewars.com

https://hackattic.com/challenges

hackattic.com

https://exercism.org

exercism.org

https://koans.idogawa.com/

koans.idogawa.com

https://github.com/Arrowsome/ruby-coding-challenges

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https://tsch.js.org/

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https://typehero.dev/

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dev.to

Type | Treat 2021 – Day 1 Read at the source ↗

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fly.io

https://github.com/pierreavn/google-hashcode-archive

github.com

https://codingchallenges.fyi

codingchallenges.fyi

https://github.com/codecrafters-io/build-your-own-x

github.com

https://projectbook.code.brettchalupa.com

projectbook.code.brettchalupa.com

https://github.com/practical-tutorials/project-based-learning

github.com

https://build-your-own.org/

build-your-own.org

https://aosabook.org/en/

aosabook.org

https://technicaldeft.com/build-a-database-server

technicaldeft.com

https://noahgibbs.gumroad.com/l/rebuilding_http

noahgibbs.gumroad.com

https://shop.jcoglan.com/building-git/

shop.jcoglan.com

https://www.reddit.com/r/csMajors/comments/z4qjzx/a_guide_to_competitive_programming/

reddit.com

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https://code.golf/

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https://www.codingame.com/multiplayer/clashofcode

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https://spacetraders.io/

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https://artifactsmmo.com/

artifactsmmo.com

https://www.codingame.com

codingame.com

https://github.com/ryanb/ruby-warrior

github.com

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https://sc2ai.pages.dev/

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