A Ruby static code analyzer and formatter, based on the community Ruby style guide.

RuboCop's AST extensions and NodePattern functionality

A RuboCop extension focused on enforcing Rails best practices and coding conventions.

An extension of RuboCop focused on thread-safety checks.

Code style checking for Minitest files.

Code style checking for RSpec files.

A community-driven Ruby coding style guide

RuboCop's documentation site

Code style checking for factory_bot files.

Code style checking for Capybara files.