Best Flog Alternatives in 2026
The top Flog alternatives are OpenText Fortify SAST, Snyk Code and GitHub CodeQL: 15 ruby static analysis tools our editors would look at instead of Flog, in our ranking order.
Flog: An open-source Ruby tool for scoring method and class complexity locally. Where it falls short: focuses on complexity rather than security analysis or type checking.
Switching from Flog? For most ruby static analysis tools buyers the best Flog alternative is OpenText Fortify SAST, built for enterprises needing comprehensive SAST. On a budget, Codacy starts at $18/user/mo. Snyk Code has a free plan.
Why People Look for a Flog Alternative
- Focuses on complexity rather than security analysis or type checking
- Does not provide autofix features
- No hosted option; support is through documentation
- No security analysis — 2 of the alternatives below have it
- No type checking — 2 of the alternatives below have it
Quick Picks by What You Need
- Best overallOpenText Fortify SAST9.1
Enterprises needing comprehensive SAST
Visit OpenText Fortify SAST - Lowest priceCodacy8.2
Paid plans from $18/user/mo
Visit Codacy - Best free optionSnyk Code8.6
Has a free plan
Visit Snyk Code - Best for security analysisCodacy8.2
Security analysis (Flog: no)
Visit Codacy
All 15 Flog Alternatives, Ranked
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.
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Best forEnterprises needing comprehensive SAST
- Better than Flog:
- Automated fixes
- Editor score 9.1 vs 6.7
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
- Better than Flog:
- Automated fixes
- Editor score 8.6 vs 6.7
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
- Better than Flog:
- Automated fixes
- Editor score 8.4 vs 6.7
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
- Better than Flog:
- Security analysis
- Editor score 8.2 vs 6.7
Broad code and security checks, with pull-request controls and a free plan.
- Security analysis
- Custom rules
8.2/10★★★★☆Visit Codacy -
Best forTeams combining code review, security, and dependencies
- Better than Flog:
- Editor score 8.1 vs 6.7
A Ruby-capable analysis platform combining pull-request checks, security, and dependency review.
8.1/10★★★★☆Visit DeepSource -
Best forTeams wanting configurable security rules and AI triage
- Better than Flog:
- Security analysis
- Editor score 8.0 vs 6.7
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
- Better than Flog:
- Automated fixes
- Editor score 7.9 vs 6.7
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
- Better than Flog:
- Editor score 7.9 vs 6.7
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
- Better than Flog:
- Editor score 7.8 vs 6.7
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
- Better than Flog:
- Editor score 7.6 vs 6.7
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
- Better than Flog:
- Editor score 7.5 vs 6.7
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
- Better than Flog:
- Type checking
- Editor score 7.4 vs 6.7
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
- Better than Flog:
- Type checking
- Editor score 7.3 vs 6.7
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
- Better than Flog:
- Editor score 7.2 vs 6.7
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
- Better than Flog:
- Editor score 7.1 vs 6.7
A free, open-source Rails analyzer for configurable code-practice checks and reports.
- Self-hosted option
- Custom rules
7.1/10★★★★☆Visit site
Flog Alternatives: Common Questions
What is the best alternative to Flog?
OpenText Fortify SAST: #1 in our Ruby Static Analysis Tools ranking, with an editor score of 9.1 out of 10. Broad code analysis and workflow integrations for teams with enterprise SAST needs.
Is there a free alternative to Flog?
Yes. Snyk Code, GitHub CodeQL, Codacy, DeepSource and Semgrep Assistant have a free plan or a free tier (13 of the 15 alternatives on this page).
What is the cheapest paid alternative to Flog?
Of the alternatives here that publish a price, Codacy starts lowest, at $18/user/mo.
Why do people look for Flog alternatives?
Focuses on complexity rather than security analysis or type checking; Does not provide autofix features; No hosted option; support is through documentation.
How do I switch from Flog?
Export your data from Flog (most tools have an export in their settings). Sign up for the alternative; start on its free plan or trial if it has one. Import your export and set up the integrations your team relies on. Run both side by side for a short while, then cancel Flog.
How to Switch from Flog
- Export your data from Flog (most tools have an export in their settings).
- Sign up for the alternative; start on its free plan or trial if it has one.
- Import your export and set up the integrations your team relies on.
- Run both side by side for a short while, then cancel Flog.
Flog vs Each Alternative
| # | Tool | Free plan | Paid from | Automated fixes | Custom rules | Score |
|---|---|---|---|---|---|---|
| 19 | Flog | Yes | Free | No | 6.7 | |
| 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 |
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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