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Codethos.dev
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Codethos is a gamified learning platform for developers who want to build real programming and application security skills through hands-on challenges.
Instead of toy coding exercises, Codethos focuses on production-oriented problems such as parsing, file I/O, APIs, authentication, rate limiting, access control, vulnerabilities, and other real-world engineering scenarios.
The platform combines structured learning paths, automated grading, XP, streaks, leaderboards, achievements, and verifiable certificates.
Codethos currently offers tracks in Programming, Application Security, and Bioinformatics, with exercises designed to help learners understand, build, debug, and secure real software.
It is particularly useful for developers who increasingly rely on AI coding tools and want to develop the skills needed to understand, review, debug, and secure generated code.
Project Euler
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Based on our record, Project Euler seems to be more popular. It has been mentiond 415 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Let's hope this is going to help me solve some more Project Euler [1] problems! [1] https://projecteuler.net/. - Source: Hacker News / 4 months ago
Https://projecteuler.net/ for "Thinker" brain food. (it still has the issue of not being a pragmatic use of time, but there are plenty interesting enough questions which it at least helps). - Source: Hacker News / 7 months ago
I have a Project Euler (https://projecteuler.net/) account. Though I do not register at all on the leader board I will sometimes work obsessively on a problem just to make one of the level icons light up for me. There is not really competition just a tiny reward. - Source: Hacker News / 9 months ago
I do hobby programing. It is sometimes to create something (supposedly) useful. Lately though it is more discovery and a little math like. I enjoy Project Euler (https://projecteuler.net/. Recently I have been playing with superpermutations (https://projecteuler.net/) and pencil and paper is useful but filling lots of paper with lots of numbers is not that fun. - Source: Hacker News / over 1 year ago
As pointed out in a sibling comment, it appears that quote only shows up if you're logged in, but assuming you have an account and are logged in, it's on the homepage (https://projecteuler.net/), second paragraph under the following heading: > I learned so much solving problem XXX, so is it okay to publish my solution elsewhere? > It appears that you have answered your own question. There is nothing quite like... - Source: Hacker News / over 1 year ago
LeetCode - Practice and level up your development skills and prepare for technical interviews.
Exercism - Download and solve practice problems in over 30 different languages.
TryHackMe - TryHackMe is an online platform for learning and teaching cyber security, all through your browser.
Codewars - Achieve code mastery through challenge.
HackerRank - HackerRank is a platform that allows companies to conduct interviews remotely to hire developers and for technical assessment purposes.
Codecademy - Learn the technical skills you need for the job you want. As leaders in online education and learning to code, we’ve taught over 45 million people using a tested curriculum and an interactive learning environment.