Comparison

RuboCop vs SpotBugs

On the evidence we track, RuboCop leads this comparison with a composite score of 70/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Machine formatsJSONMarkdownGraphQLor send Accept: application/json
RuboCop70
SpotBugs54
Score
Vioscale score
RuboCop70 / 100medium · 53%
SpotBugs54 / 100low · 49%
Pricing
Free tier
RuboCop
SpotBugs
Model
RuboCopcommercial
SpotBugsopen_source
Price level
RuboCopfree
SpotBugsfree
Transparent
RuboCop
SpotBugs
Integrations
Count
RuboCop14
SpotBugs6
Reliability
Status page
RuboCop
SpotBugs
Adoption
Dependent repos
RuboCop115,529
SpotBugs2,768
Github stars
RuboCop12,899
SpotBugs3,925
Activity
Commits last 30d
RuboCop100
SpotBugs34
Release
Cadence days
RuboCop16
SpotBugs24
History
RuboCop20 items
SpotBugs20 items
License
Spdx
RuboCopMIT
SpotBugsLGPL-2.1
Language
Primary
RuboCopRuby
SpotBugsJava

Capabilities

Feature-by-feature on the axes that matter for code quality tools. “-” means undocumented, not absent.

Core
Function
RuboCopLinter + formatter
SpotBugsStatic analyzer
Language scope
RuboCopSingle-language
SpotBugsSingle-language
Implementation language
RuboCopRuby
SpotBugsJava
Capability
Autofix
RuboCop
SpotBugs
Config
Config model
RuboCopConfig file
SpotBugsRule packs
Extensibility
Custom rules
RuboCop
SpotBugs
Deployment
Deployment
RuboCopCLI-local
SpotBugsCLI-local
Delivery
Editor integration
RuboCop
SpotBugs
CI / VCS gating
RuboCop-
SpotBugs-
Insight
Code metrics
RuboCop-
SpotBugs-
Performance
Incremental / monorepo aware
RuboCop-
SpotBugs-
Licensing
Open-source
RuboCopOSS
SpotBugsOSS
Commercial
Pricing model
RuboCopFree
SpotBugsFree

What each one is

The product in its own terms, so the numbers below have context.

RuboCop

Leader

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.

Independently observed

SpotBugs

An open-source utility that examines Java source code to identify potential programming issues without executing it. It integrates with build tools and IDEs through plugins and supports community-contributed or custom analysis rules.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

RuboCop

Leader
Open sourceFree tier

Free and open source

as of verify ↗

SpotBugs

Open source
as of verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platforms
CLI
RuboCop
SpotBugs
Deployment
Self-hosted
RuboCop
SpotBugs
On-premise
RuboCop
SpotBugs

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

RuboCop

Leader
14 total
  • 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
Independently observed

SpotBugs

6 total
  • Maven
  • Gradle
  • Eclipse
  • Ant
  • fb-contrib
  • find-sec-bugs
Independently observed

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.