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 Ruby. Learn Ruby with our recommended free books and free tutorials.


Related Software

Ruby Linters
RuboCopRuby static code analyzer and formatter
ReekExamines Ruby classes, modules, and methods
BrakemanStatic analysis tool
ERB LintLint your ERB or HTML files

Read our verdict in the software roundup.


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