Joern
An interactive workbench for analyzing code and finding vulnerabilities.
At a glance
- Editor scoreNot yet scored
- PricingFree plan
- Best forResearchers and advanced security analysts
- Free planYes
- Paid fromNone
- Facts checked21 Sep 2026
Where it wins
- Generates code property graphs from source, bytecode, and binaries
- Supports taint, data-flow, scripting, plugins, and custom schema extensions
- Offers graph exports, IDE integrations, HTTP API, and self-hosting
Where it doesn't
- No verified pull-request scanning in the stated workflow
- Does not include autofix capabilities
- Scala-based queries favor users comfortable with that query model
Our verdict on Joern
Joern is an open-source static code-analysis platform for security researchers, advanced security analysts, and developers who need to investigate source code, bytecode, or binary executables. It generates code property graphs and supports analysis through a Scala-based domain-specific language. The platform includes Joern Scan, taint and data-flow analysis, scripting, graph export, custom plugins, and access through HTTP API and WebSocket connections. It runs on Linux, macOS, and Windows, with self-hosted deployment available.
Its strongest differentiator is the depth of its analysis model. Joern can export AST, CFG, CDG, DDG, PDG, and CPG representations, while custom plugins and CPG schema extensions allow teams to adapt the platform to specialized analysis needs. Scripted and non-interactive workflows support automation, and the published category specifications include CI/CD integration, IDE support, and custom rules. IntelliJ IDEA and Visual Studio Code are listed integrations, alongside the HTTP API. This breadth makes Joern a strong fit for graph-oriented vulnerability research and repeatable program analysis rather than only surface-level scanning.
Joern follows an open-source model with a free plan and no stated software cost. The platform's flexibility comes with a focused workflow: it does not provide verified pull-request scanning or autofix, so teams seeking those capabilities should consider an alternative SAST tool. Scala-based queries may also be a less direct fit for users who prefer a simpler rule authoring experience. Choose Joern for customizable, self-hosted investigation across multiple code representations; look elsewhere if automated remediation or pull-request-centered review is the primary requirement.
Joern pricing
Joern fact sheet
| Free plan | Yes |
|---|---|
| Paid from | None |
| Analysis targets | source code, bytecode, binaries |
| Languages supported | Not verified |
| Pull request scans | Not verified |
| IDE support | Not verified |
| CI/CD integration | Yes |
| Custom security rules | Yes |
| Automated fixes | Not verified |
| Deployment | Self-hosted, Desktop |
| Platforms | Windows, macOS, Linux |
| Support | Community, Docs |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Pricing | Free plan |
| Website | joern.io |
| Facts checked | 21 Sep 2026 |
Alternatives to Joern
- Semgrep CodeBroad SAST coverage with pull-request, CI/CD, IDE, custom-rule, and AI-assisted workflows.9.0
- Snyk CodeAffordable source-code SAST with pull-request, IDE, CI/CD, and automated-fix workflows.9.0
- GitHub CodeQLDeep SAST for GitHub workflows, with free public-repository scanning.9.0
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Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026
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