Openleetcode Review: A Local LeetCode Runner With the Tests in the Repo

Openleetcode Review: A Local LeetCode Runner With the Tests in the Repo

Openleetcode is a free, open-source runner for LeetCode problems that executes your solution on your own machine. Its distinguishing feature is that the judge inputs live in the repository: 1,410 problem manifests with their expected outputs are published as a versioned, forkable artifact, so nothing is submitted to LeetCode and no account is required. What Is Openleetcode and How Does It Differ From Other LeetCode CLIs? Openleetcode is a command-line tool written in Haskell that takes a solution file, matches it to a problem manifest, runs it through a small language-specific harness, and grades the result against test cases that ship with the tool. The author’s own framing is that the CLI is “just the glue” — the interesting artifact is the test corpus underneath it. ...

October 1, 2026 · 11 min · baeseokjae