The Best Ruby Static Analysis Tools in 2026
We researched Ruby static analysis tools using information on their official websites, including pricing pages, plan tables, and product documentation. Rankings focus on how well each product analyzes Ruby code, value for money, and features verified in vendor materials, helping teams compare options for code quality, security, and type checking.
Our top picks
-
Top ranked
OpenText Fortify SAST#1 of 219.1/10Broad code analysis and workflow integrations for teams with enterprise SAST needs.
Pricing on request
-
Runner-up
Snyk Code#2 of 218.6/10Security-focused code scanning with IDE, pull-request, and CI/CD workflows.
Free plan
-
Top-ranked free plan
GitHub CodeQL#3 of 218.4/10Semantic queries and pull-request alerts for teams working in GitHub-centered workflows.
Free plan
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
The full ranking 21 tools, best first
-
Best forEnterprises needing comprehensive SAST
Broad code analysis and workflow integrations for teams with enterprise SAST needs.
- Automated fixes
- Custom rules
9.1/10★★★★★Visit OpenText -
Best forTeams prioritizing Ruby application security
Security-focused code scanning with IDE, pull-request, and CI/CD workflows.
- Automated fixes
- Custom rules
8.6/10★★★★☆Visit Snyk Code -
Best forGitHub-centric teams needing semantic security analysis
Semantic queries and pull-request alerts for teams working in GitHub-centered workflows.
- Automated fixes
- Custom rules
8.4/10★★★★☆Visit GitHub CodeQL -
Best forTeams seeking broad code quality and security checks
Broad code and security checks, with pull-request controls and a free plan.
- Security analysis
- Custom rules
Free plan · 14-day trial Our Codacy verdict → Visit CodacyFor vendors Sponsor this spot · #4 · $69/mo →8.2/10★★★★☆Visit Codacy -
Best forTeams combining code review, security, and dependencies
A Ruby-capable analysis platform combining pull-request checks, security, and dependency review.
Free plan · 14-day trial Our DeepSource verdict → Visit DeepSourceFor vendors Sponsor this spot · #5 · $59/mo →8.1/10★★★★☆Visit DeepSource -
Best forTeams wanting configurable security rules and AI triage
Semgrep pairs code scanning with AI triage, but Ruby-specific support is unclear.
- Security analysis
- Custom rules
8.0/10★★★★☆Visit Semgrep -
Best forRuby teams wanting an open-source linter
A configurable Ruby linter with formatting, security checks, and CI/editor support.
- Automated fixes
- Custom rules
7.9/10★★★★☆Visit RuboCop -
Best forTeams wanting broad quality checks with a free tier
A broad cloud analysis suite with a useful free tier and paid team controls.
7.9/10★★★★☆Visit Qlty Cloud -
Best forRails teams focused on application security
A Rails-focused security scanner with configurable checks and CI integrations.
- Custom rules
7.8/10★★★★☆Visit Brakeman -
Best forRuby teams focused on code-smell detection
Ruby-focused smell detection with configurable rules and extensive editor and CI integrations.
7.6/10★★★★☆Visit Reek -
Best forSmall Ruby apps needing free security scanning
Local Ruby scanning with dependency checks and mitigation guidance, but no IDE or CI/CD support.
7.5/10★★★★☆Visit Dawnscanner -
Best forRuby teams adopting gradual static typing
Sorbet adds gradual static type checking and editor support to Ruby projects.
- Type checking
- Self-hosted option
7.4/10★★★★☆Visit Sorbet -
Best forTeams using RBS signatures for Ruby type checks
A focused, open-source Ruby type checker for teams working with RBS.
- Type checking
- Self-hosted option
7.3/10★★★★☆Visit Steep -
Best forRuby teams wanting combined code-smell reports
Combines Reek, Flay, and Flog into configurable reports for Ruby projects.
- Self-hosted option
- Custom rules
7.2/10★★★★☆Visit RubyCritic -
Best forRails teams checking common code practices
A free, open-source Rails analyzer for configurable code-practice checks and reports.
- Self-hosted option
- Custom rules
7.1/10★★★★☆Visit site -
Best forRuby teams auditing vulnerable gem dependencies
A focused, open-source CLI for auditing vulnerable gems and insecure sources in Bundler lockfiles.
7.0/10★★★★☆Visit RubySec -
Best forTeams linting ERB templates and embedded Ruby
A free, self-hosted command-line linter focused on ERB and HTML templates.
- Security analysis
- Automated fixes
- Self-hosted option
6.9/10★★★☆☆Visit ERB Lint -
Best forRuby teams measuring duplicated code
A focused, open-source Ruby tool for locating duplicated code across files.
- Self-hosted option
6.8/10★★★☆☆Visit Flay -
Best forRuby teams measuring method and class complexity
An open-source Ruby tool for scoring method and class complexity locally.
- Self-hosted option
6.7/10★★★☆☆Visit Flog -
Best forTeams linting Slim templates in CI
Configurable command-line linting for Slim templates, with local and CI workflows.
- Self-hosted option
- Custom rules
6.6/10★★★☆☆Visit Slim-Lint -
Best forRuby 3.3+ developers exploring inferred types
A focused, open-source Ruby type interpreter for developers evaluating inferred types.
- Type checking
- Self-hosted option
6.5/10★★★☆☆Visit TypeProf
No tools match those filters.
Compare at a glance
| # | Tool | Free plan | Paid from | Automated fixes | Custom rules | Score |
|---|---|---|---|---|---|---|
| 1 | OpenText Fortify SAST | Yes | Yes | 9.1 | ||
| 2 | Snyk Code | Yes | $25/user/mo | Yes | Yes | 8.6 |
| 3 | GitHub CodeQL | Yes | $30/user/mo | Yes | Yes | 8.4 |
| 4 | Codacy | Yes | $18/user/mo | Yes | 8.2 | |
| 5 | DeepSource | Yes | 8.1 | |||
| 6 | Semgrep Assistant | Yes | Yes | 8.0 | ||
| 7 | RuboCop | Free | Yes | Yes | 7.9 | |
| 8 | Qlty Cloud | Yes | $20/user/mo | 7.9 | ||
| 9 | Brakeman | Yes | 7.8 | |||
| 10 | Reek | Free | No | 7.6 | ||
| 11 | Dawnscanner | Free | 7.5 | |||
| 12 | Sorbet | Yes | Free | No | No | 7.4 |
| 13 | Steep | Yes | Free | No | 7.3 | |
| 14 | RubyCritic | Yes | Free | No | Yes | 7.2 |
| 15 | Rails Best Practices | Yes | Free | No | Yes | 7.1 |
| 16 | bundler-audit | Free | 7.0 | |||
| 17 | ERB Lint | Yes | Free | Yes | Yes | 6.9 |
| 18 | Flay | Yes | Free | No | No | 6.8 |
| 19 | Flog | Yes | Free | No | 6.7 | |
| 20 | Slim-Lint | Yes | Free | No | Yes | 6.6 |
| 21 | TypeProf | Yes | Free | 6.5 |
Head-to-head All 21 comparisons →
- OpenText Fortify SAST vs Codacy
- OpenText Fortify SAST vs DeepSource
- OpenText Fortify SAST vs Semgrep Assistant
- OpenText Fortify SAST vs RuboCop
- OpenText Fortify SAST vs Qlty Cloud
- Snyk Code vs DeepSource
- Snyk Code vs Semgrep Assistant
- Snyk Code vs RuboCop
- Snyk Code vs Qlty Cloud
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How we rank ruby static analysis tools
Every tool on this page was researched by iTechGuides Editors from its official website — pricing pages, plan tables and product documentation. We rank on how well each one does this category's core job, what the free or entry plan includes, and where it falls short. Where we have enough verified facts, the score out of 10 is a rubric — job fit, value and how much we could verify — shown with its breakdown on every tool's page; a tool we have not verified enough to score yet shows its rank without a number. Scores are re-checked when a product changes its plans. Read the full editorial policy, or submit a tool we missed.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update