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Head-to-head · Ruby Static Analysis Tools

GitHub CodeQL vs Qlty Cloud

  • Updated Sep 2026
  • Both researched from official sources
  • 4 checks side by side
Higher score GitHub CodeQL #3 in Ruby Static Analysis Tools 6.3/10 Free plan · paid from $30/mo Free plan✓ 2 of 6 features Visit GitHub CodeQL
Qlty Cloud #8 in Ruby Static Analysis Tools 5.0/10 Free plan · paid from $20/mo Free plan✓ 0 of 6 features Visit Qlty Cloud

GitHub CodeQL leads on 2 checks, Qlty Cloud on 1, and 1 is even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreGitHub CodeQL · 6.3/10
  • Lowest starting priceQlty Cloud · $20/mo
  • Free planboth
  • Most featuresGitHub CodeQL · 2 of 6

GitHub CodeQL scores higher on our rubric for ruby static analysis tools: 6.3 against 5.0 out of 10; our editors rank them #3 and #8.

Qlty Cloud is cheaper to start at $20/mo against $30/mo. GitHub CodeQL offers automated fixes; Qlty Cloud doesn't publish it. GitHub CodeQL offers custom rules; Qlty Cloud doesn't publish it.

GitHub CodeQL is the better fit for gitHub-centric teams needing semantic security analysis. Qlty Cloud is the better fit for teams wanting broad quality checks with a free tier.

  • GitHub CodeQL fits best

    GitHub-centric teams needing semantic security analysis

  • Qlty Cloud fits best

    Teams wanting broad quality checks with a free tier

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Side by side

Feature GitHub CodeQL 6.3/10 Visit ↗ Qlty Cloud 5.0/10 Visit ↗
At a glance
Editor score 6.3 5.0
Ranking #3 in Ruby Static Analysis Tools #8 in Ruby Static Analysis Tools
Best for GitHub-centric teams needing semantic security analysis Teams wanting broad quality checks with a free tier
Pricing model Free plan + paid Free plan + paid
Starting price $30/mo $20/mo (best)
Free plan ✓ ✓
Free trial — —
Deployment Cloud, Desktop Cloud, Browser extension
Platforms Web, Windows, macOS, Linux Web, Chrome extension
Support Docs Email, Community
Integrations 4 integrations 9 integrations
Built for Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features GitHub CodeQL 2/6 · Qlty Cloud 0/6
Security analysis Not published Not published
Type checking Not published Not published
Automated fixes ✓ (best) Not published
Custom rules ✓ (best) Not published
Hosted option Not published Not published
Self-hosted option Not published Not published
Our review
Pros
  • Data-flow and taint analysis can surface vulnerability paths.
  • Custom queries and standard packs support tailored analysis.
  • Pull-request alerts integrate with GitHub code scanning.
  • Free plan includes linting, formatting, coverage, and unlimited contributors
  • Checks pull requests for quality, coverage, maintainability, and security
  • Integrates with GitHub and multiple CI services
Cons
  • Commercial private-repository use requires GitHub security licensing.
  • Paid GitHub Code Security costs $30 per active committer monthly.
  • Ruby-specific language support is not clearly identified.
  • Pro pricing starts at $20 per contributor monthly
  • Shared configurations and analysis trends require a paid plan
  • Cloud-based workflow may not suit teams seeking a different deployment model
Our verdict

GitHub CodeQL analyzes source code by turning a codebase into a database and running semantic queries against it. It is aimed at teams that need to detect vulnerabilities, errors, and data-flow problems, particularly those already working…

Read the review →

Qlty Cloud is a cloud-based code health platform for development teams that want Ruby static analysis alongside checks for other languages. It reviews pull requests for static-analysis issues, coverage impact, maintainability, duplication,…

Read the review →
  1. GitHub CodeQLRuby Static Analysis Tools 6.3Free plan · paid from $30/mo
  2. Qlty CloudRuby Static Analysis Tools 5.0Free plan · paid from $20/mo

Strengths and trade-offs

  • GitHub CodeQL — where it wins

    • Data-flow and taint analysis can surface vulnerability paths.
    • Custom queries and standard packs support tailored analysis.
    • Pull-request alerts integrate with GitHub code scanning.

    Where it doesn't

    • Commercial private-repository use requires GitHub security licensing.
    • Paid GitHub Code Security costs $30 per active committer monthly.
    • Ruby-specific language support is not clearly identified.

  • Qlty Cloud — where it wins

    • Free plan includes linting, formatting, coverage, and unlimited contributors
    • Checks pull requests for quality, coverage, maintainability, and security
    • Integrates with GitHub and multiple CI services

    Where it doesn't

    • Pro pricing starts at $20 per contributor monthly
    • Shared configurations and analysis trends require a paid plan
    • Cloud-based workflow may not suit teams seeking a different deployment model
  • GitHub CodeQL6.3/10 · Free plan · paid from $30/mo

    Semantic queries and pull-request alerts for teams working in GitHub-centered workflows.

    Visit GitHub CodeQLFull verdict →
  • Qlty Cloud5.0/10 · Free plan · paid from $20/mo

    A broad cloud analysis suite with a useful free tier and paid team controls.

    Visit Qlty CloudFull verdict →

More comparisons

All ruby static analysis tools comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026