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Gronex

LeetCode trains you for algorithms. Real backend rounds hand you an unfamiliar repository and ask you to find the bug and make the tests green. Gronex is practice for exactly that, in your browser, with no setup. Java, P…

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LeetCode trains you for algorithms. Real backend rounds hand you an unfamiliar repository and ask you to find the bug and make the tests green. Gronex is practice for exactly that, in your browser, with no setup. Java, Python, Node.js and C++. Concurrency races, database incidents, API contract bugs, heap dumps and GC logs. Free problems run without an account.

Discovery history

  1. Product Hunt 新品

    Aug 26, 2026 · 1 observations

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