oxicop – fast Ruby linter

oxicop is billed as an extremely fast Ruby linter, written in Rust.

oxicop reads .rubocop.yml from your project root automatically — no extra flags needed.

This is free and open source software.

Key Features

• A drop-in rubocop replacement. 2-30x faster with the same .rubocop.yml config.
• Replaces rubocop for the most common linting checks — no Ruby runtime needed.
• 570 built-in cops across Layout, Style, Lint, Naming, Metrics, and Security categories.
• Native parallelism. Files are checked concurrently out of the box.
• A single static binary. ~3MB. No dependencies. Installs in seconds.
• Built-in .gitignore support. Respects your project structure automatically.
• JSON, compact, and human-readable output formats for CI and editor integrations.
• Reads your existing .rubocop.yml — enable, disable, and configure cops without learning a new format.

Website: github.com/npow/oxicop
Support:
Developer: oxicop contributors
License: MIT License

oxicop is written in Rust. Learn Rust with our recommended free books and free tutorials.

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