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PMDSonarQube
Free

Free to download and use, with source code published on GitHub.

 Freemium

Free starting option, with paid plans for larger teams and more features.

Windows, macOS, Linux, Command line Web, Self-hosted
  • Large built-in rule set for Java, with support for other languages
  • Extensible with custom rules and rulesets
  • Self-hosted server or managed cloud option
  • Tracks technical debt and reliability as well as security
  • Command-line tool with no graphical interface of its own
  • Rulesets need tuning to avoid noisy reports on large codebases
  • Running the server yourself needs infrastructure and maintenance
  • Advanced features are in paid plans
Downloadable app Self-hosted, Hosted service
Open source Closed source
License not stated License not stated
No account needed Not stated if an account is needed
Works offline Not stated if it works offline

Checked October 1, 2026

Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.