Head-to-head · API Linting Tools
Spectral vs Zally
Spectral leads on 0 checks, Zally on 0, and 5 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.
Our verdict
- Highest scoreSpectral · 8.8/10
- Free planboth
- Most featuresZally · 2 of 5
Spectral scores higher on our rubric for api linting tools: 8.8 against 7.9 out of 10; our editors rank them #1 and #2.
Spectral is the better fit for teams needing customizable OpenAPI and AsyncAPI linting. Zally is the better fit for teams linting OpenAPI 2 or 3 with a web UI.
- Spectral fits best
Teams needing customizable OpenAPI and AsyncAPI linting
- Zally fits best
Teams linting OpenAPI 2 or 3 with a web UI
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Side by side
| Feature | Spectral 8.8/10 Visit ↗ | Zally 7.9/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 8.8 | 7.9 |
| Ranking | #1 in API Linting Tools | #2 in API Linting Tools |
| Best for | Teams needing customizable OpenAPI and AsyncAPI linting | Teams linting OpenAPI 2 or 3 with a web UI |
| Pricing model | Free | Free |
| Starting price | Free plan | Open source |
| Free plan | ✓ | ✓ |
| Free trial | — | — |
| Deployment | Self-hosted | Self-hosted |
| Platforms | Windows, macOS, Linux | Web, Windows, Linux |
| Support | Community, Docs | Community |
| Integrations | 4 integrations | 1 integrations |
| Built for | Solo, Small business, Mid-market, Enterprise | Small business, Mid-market, Enterprise |
| Features Spectral 0/5 · Zally 2/5 | ||
| OpenAPI linting | Not checked yet | ✓ (best) |
| AsyncAPI linting | Not checked yet | — |
| GraphQL schema linting | Not checked yet | — |
| Custom rules | Not checked yet | ✓ (best) |
| CI integration | Not checked yet | Not checked yet |
| Our review | ||
| Pros |
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| Cons |
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| Our verdict | Spectral is an open-source linter for JSON and YAML API descriptions, aimed at developers and API teams that want to enforce style guides across local work, editors and Git-based processes. It includes built-in rulesets for OpenAPI and… Read the review → |
Zally is an open-source API quality tool for API designers and developers who want consistent OpenAPI specifications and feedback during development. It lints OpenAPI 2 and 3 against configurable rules, including Zalando’s RESTful… Read the review → |
Strengths and trade-offs
Spectral — where it wins
- Built-in rulesets cover both OpenAPI and AsyncAPI.
- Custom rulesets and JavaScript or TypeScript functions extend linting.
- Works in CLI, JavaScript, CI, VS Code and JetBrains workflows.
Where it doesn't
- Focused on linting; it does not include a mock server.
- Requires teams to define and maintain custom rules for their conventions.
- Support is through community resources and documentation.
Zally — where it wins
- Lints OpenAPI 2 and 3 through REST API, CLI, or web interface
- Lets teams enable or disable server-side rules and ignore rules per API
- Supports custom checks in Kotlin
Where it doesn't
- Does not lint AsyncAPI or GraphQL schemas
- Documented integration is limited to an unofficial Maven plugin
- Custom checks require implementing them in Kotlin
- Spectral8.8/10 · Free plan
A customizable JSON and YAML linter for teams enforcing OpenAPI and AsyncAPI standards.
Visit SpectralFull verdict → - Zally7.9/10 · Open source
A focused OpenAPI linter with REST API, CLI, web UI, and configurable rules.
Visit ZallyFull verdict →
Spectral vs Zally: questions
Which is better for API linting tools, Spectral or Zally?
Spectral scores higher on our rubric for api linting tools: 8.8 against 7.9 out of 10; our editors rank them #1 and #2.
How do Spectral and Zally compare?
All 5 checks we put side by side come out level: neither leads on any.
Do Spectral and Zally have a free plan?
Spectral: Yes. Zally: Yes.
More comparisons
- Spectral vs APIMatic
- Spectral vs vacuum
- Spectral vs IBM OpenAPI Validator
- Spectral vs OpenLint
- Spectral vs Thymian
- Spectral vs AEP OpenAPI Linter
- Zally vs APIMatic
- Zally vs vacuum
All API linting tools comparisons → · Full ranking →
Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026
Last updated · How we research and update