RuboCop
Ruby code analyzer that identifies style violations and performance issues
- Also known as
- rubocop
What is RuboCop?
A linting tool for Ruby that checks code against configurable rules for code quality and performance standards, with built-in autocorrection capabilities.
RuboCop pricing
We don't have RuboCop's full plan breakdown yet (its pricing page resisted automated reading). Here's what we could confirm. Always check live pricing for exact numbers.
Free and open source
What RuboCop does
The capabilities that matter for code quality tools, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- Function
- Linter + formatter
- Language scope
- Single-language
- Implementation language
- Ruby
- Autofix
- ✓
- Config model
- Config file
- Custom rules
- ✓
- Deployment
- CLI-local
- Editor integration
- ✓
- CI / VCS gating
- -
- Code metrics
- ✓
- Incremental / monorepo aware
- -
- Open-source
- OSS
- Pricing model
- Free
Platform & deployment
Independently observed- CLI
- Self-hosted
Integrations (14)
Independently observed- rubocop-performance
- rubocop-rails
- rubocop-rspec
- rubocop-minitest
- rubocop-rake
- rubocop-sequel
- rubocop-thread_safety
- rubocop-capybara
- rubocop-factory_bot
- rubocop-rspec_rails
- rubocop-i18n
- Eglot
- Helix
- Flycheck
Security & compliance
Known vulnerabilities: 1 (0 in the last 12 months), max severity LOW sourcea count reflects scale & disclosure, not quality
RuboCop FAQ
Common questions about RuboCop, answered from independent, dated evidence.
What is RuboCop?
RuboCop is an open-source Ruby linter and formatter that enforces code style based on the Ruby community style guide. It detects code quality issues and can automatically fix many of them, with extensive configuration options and extensibility through community plugins. It is indexed under Code Quality Tools.
Source: https://rubocop.org/
Is RuboCop free to use?
RuboCop is open source, so it can be self-hosted and used at no licence cost. It is released under the MIT licence. Pricing changes often, so verify at source before relying on it.
Source: https://rubocop.org/
What platforms does RuboCop support?
RuboCop supports a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.
Source: https://rubocop.org/
What does RuboCop integrate with?
We have confirmed 13 integrations for RuboCop, including rubocop-performance, rubocop-rails, rubocop-rspec, rubocop-minitest, rubocop-rake, rubocop-sequel, rubocop-thread_safety and rubocop-capybara, plus 5 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.
Source: https://rubocop.org/
Is RuboCop open source?
Yes. RuboCop is published under the MIT licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.
RuboCop alternatives
Other code quality tools we track, ranked by the same independent score.
- PrettierA code formatter that automatically enforces consistent style across projectshigh · 79%
- StyleLintA tool for checking CSS code for errors and style inconsistenciesmedium · 72%
- ESLintStatic analysis tool that identifies and fixes issues in JavaScript codehigh · 78%
- Ruffmedium · 68%
- BlackAn opinionated Python code formatter that automatically reformats code to a consistent stylehigh · 79%
- BiomeA unified code formatter and linter for web developmentmedium · 67%
Compare RuboCop
Side by side against other code quality tools, attribute by attribute, with a source on every value.
The vioscaleAI score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for RuboCop, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Development activity | 63 | 0.12 | 7.6 | ✓ |
| Dependent projects | 84 | 0.08 | 6.8 | ✓ |
| Release cadence | 91 | 0.07 | 6.1 | ✓ |
| Capabilities | 67 | 0.08 | 5.6 | ✓ |
| Security score | 58 | 0.05 | 3.1 | ✓ |
| Stars | 78 | 0.03 | 2.6 | ✓ |
| Integrations | 34 | 0.05 | 1.8 | ✓ |
| Security posture | 0 | 0.09 | 0.0 | - |
| Package downloads | 0 | 0.17 | 0.0 | - |
| Developer Q&A activity | 0 | 0.08 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Activity
| Attribute | Value | Evidence |
|---|---|---|
| Commits last 30d | 100 | mediumsource · 2026-09-10 · 65% |
Adoption
Content
| Attribute | Value | Evidence |
|---|---|---|
| Faq | 5 items | mediumsource · 2026-09-10 · 67% |
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | Autofix: Yes · Metrics: Yes · Function: linter_formatter · Deployment: cli_local · Open source: oss · Config model: config_file | mediumsource · 2026-09-10 · 60% |
Integrations
| Attribute | Value | Evidence |
|---|---|---|
| Count | 14 | mediumsource · 2026-08-14 · 60% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | Ruby | highsource · 2026-09-10 · 90% |
License
| Attribute | Value | Evidence |
|---|---|---|
| Spdx | MIT | highsource · 2026-09-10 · 95% |
Pricing
Release
Security
Is RuboCop the right choice for you?
Tell us the job, the constraints and what you weigh most, and we will rank RuboCop against the rest of the code quality tools we index, using the same dated evidence weighted your way.
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