TypeProf
An experimental type-level Ruby interpreter for testing and understanding Ruby code.
At a glance
- Editor scoreNot yet scored
- PricingFree plan
- Best forRuby 3.3+ developers exploring inferred types
- Free planYes
- Paid fromNone
- Facts checked26 Sep 2026
Where it wins
- Interprets Ruby code at the type level for analysis and understanding
- Configures RBS and Ruby analysis-unit directories
- Integrates with Visual Studio Code and supports configurable diagnostics
Where it doesn't
- Requires Ruby 3.3 or later
- Focuses narrowly on Ruby type analysis and diagnostics
- Lists Visual Studio Code as its sole editor integration
Our verdict on TypeProf
TypeProf is an open-source Ruby type-analysis tool for developers who want to inspect how Ruby programs behave at the type level. It interprets Ruby code, reports type-related diagnostics, and helps users test and understand programs without moving to a hosted service. The tool is distributed as a RubyGem, runs in self-hosted environments, and is suited to solo developers and small teams working with Ruby 3.3 or later.
Its strongest capability is configurable type analysis. Projects can initialize a TypeProf configuration from the command line with `typeprof --init`, set RBS interface directories, and define the directories included in each Ruby analysis unit. Diagnostic severity levels are configurable, allowing teams to tune how findings are surfaced. This makes TypeProf useful for exploring inferred types in an existing codebase or examining how interface information affects analysis. The scope is intentionally specialized: its value comes from type-level interpretation and diagnostics rather than a broad collection of unrelated static checks.
TypeProf also fits an editor-centered workflow through its Visual Studio Code extension integration. Developers can keep configuration in the project and inspect analysis results alongside Ruby code, while self-hosted deployment avoids dependence on a vendor-hosted service. The project is experimental and supports Ruby 3.3 or later, so teams on older Ruby versions or those seeking a wider linting and quality platform should consider a different tool. Choose TypeProf when inferred-type exploration, RBS configuration, and Ruby-focused diagnostics are the priority; look elsewhere when you need broad language tooling, many editor integrations, or support for earlier Ruby releases.
TypeProf pricing
TypeProf fact sheet
| Free plan | Yes |
|---|---|
| Paid from | None |
| Security analysis | Not verified |
| Type checking | Yes |
| Automated fixes | Not verified |
| Custom rules | Not verified |
| Hosted option | Not verified |
| Self-hosted option | Yes |
| Deployment | Self-hosted |
| Built for | Solo, Small business (editorial estimate) |
| Integrations | 1 integrations: Visual Studio Code |
| Pricing | Free plan |
| Website | github.com |
| Facts checked | 26 Sep 2026 |
TypeProf integrations
TypeProf lists 1 integrations on its own site.
- Visual Studio Code
Alternatives to TypeProf
- OpenText Fortify SASTBroad code analysis and workflow integrations for teams with enterprise SAST needs.—
- Snyk CodeSecurity-focused code scanning with IDE, pull-request, and CI/CD workflows.6.3
- GitHub CodeQLSemantic queries and pull-request alerts for teams working in GitHub-centered workflows.6.3
See all TypeProf alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026
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