GitHub CodeQL vs Skylos
GitHub CodeQL
codeql.github.com
Skylos
skylos.devSide by side
| Figure | GitHub CodeQL | Skylos |
|---|---|---|
| Price from | $30/mo | Free |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| API | — | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 5 | 6 |
| Spec score · Static Application Security Testing Software | 8.6 (#3) | 7.9 (#13) |
| Supported languages | CodeQL supports C/C++, C#, Go, Java, Kotlin, JavaScript, TypeScript, Python, Ruby, Rust, Swift, and GitHub Actions workflows. | It analyzes Python, JavaScript and TypeScript, Go, Java, Kotlin, PHP, Rust, Dart, C#, Shell, and deployment configuration, with analysis depth varying by language. |
Plans
GitHub CodeQL
- Free for research and open sourceFree
- GitHub Code Security$30 a month
- CodeQL for open source and researchFree
- GitHub Code Security$30 a month
- GitHub Free with CodeQL code scanningPrice not published
Skylos
- FreeFree
- Starter credit pack$9, paid once
- Builder credit pack$39, paid once
- Team credit pack$129, paid once
- Scale credit pack$499, paid once
- EnterprisePriced on request
In their own words
GitHub CodeQL
GitHub CodeQL has no write-up on Specifiction yet; its figures are above.
Skylos
Skylos is an open-source static analysis tool that checks source code for security regressions, secrets, dead code, quality issues, and mistakes introduced by AI. It analyzes Python, JavaScript and TypeScript, Go, Java, Kotlin, PHP, Rust, Dart, C#, Shell, and deployment configuration, with analysis depth differing by language. Its CLI runs locally without an account for scans and CI checks. A free VS Code extension offers inline diagnostics and optional AI verification through OpenAI or Anthropic API keys. Cloud options include GitHub pull request workflows, OIDC identity, and optional Slack and Discord notifications. A normal CLI scan remains on the user's machine; Cloud receives data when reports are uploaded, cloud actions are triggered, or the public scan endpoint is used. Uploaded reports may include findings, file paths, snippets, and scan metadata. Skylos says it does not currently claim SOC 2, ISO 27001, or CSA STAR certification. The free plan includes one cloud project, 10 stored scans, and seven-day history. One-time credit packs begin at 9.00 USD. Skylos supports API, extension, Linux, macOS, self-hosted, web, and Windows use.