Head-to-head · API Linting Tools
Zally vs OpenLint
Zally leads on 0 checks, OpenLint on 1, and 5 are even. Who comes out ahead on the 6 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.
Our verdict
- Highest scoreZally · 7.9/10
- Free planboth
- Most featuresOpenLint · 4 of 5
Zally scores higher on our rubric for api linting tools: 7.9 against 7.6 out of 10; our editors rank them #2 and #6.
OpenLint offers asyncapi linting; Zally doesn't.
Zally is the better fit for teams linting OpenAPI 2 or 3 with a web UI. OpenLint is the better fit for teams needing custom rules across API formats.
- Zally fits best
Teams linting OpenAPI 2 or 3 with a web UI
- OpenLint fits best
Teams needing custom rules across API formats
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Side by side
| Feature | Zally 7.9/10 Visit ↗ | OpenLint 7.6/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 7.9 | 7.6 |
| Ranking | #2 in API Linting Tools | #6 in API Linting Tools |
| Best for | Teams linting OpenAPI 2 or 3 with a web UI | Teams needing custom rules across API formats |
| Pricing model | Free | Free |
| Starting price | Open source | Free plan |
| Free plan | ✓ | ✓ |
| Free trial | — | — |
| Deployment | Self-hosted | Self-hosted |
| Platforms | Web, Windows, Linux | Linux, Windows, macOS |
| Support | Community | Community |
| Built for | Small business, Mid-market, Enterprise | Solo, Small business, Mid-market, Enterprise |
| Features Zally 2/5 · OpenLint 4/5 | ||
| OpenAPI linting | ✓ | ✓ |
| AsyncAPI linting | — | ✓ (best) |
| GraphQL schema linting | — | Not checked yet |
| Custom rules | ✓ | ✓ |
| CI integration | Not checked yet | ✓ (best) |
| Our review | ||
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| Cons |
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| Our verdict | 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 → |
OpenLint is a community-developed, open-source linter and ruleset project for teams that want to check API artifacts against consistent standards. Its CLI and packages lint JSON and YAML, with built-in rulesets for OpenAPI, AsyncAPI, and… Read the review → |
Strengths and trade-offs
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
OpenLint — where it wins
- Built-in rulesets cover OpenAPI, AsyncAPI, and Arazzo.
- Teams can create custom rulesets and JavaScript or TypeScript functions.
- Runs locally and can be used in CI workflows.
Where it doesn't
- Support is community-based.
- The project was established in September 2026, so its track record is young.
- It focuses on linting JSON and YAML API artifacts, not broader API management.
- Zally7.9/10 · Open source
A focused OpenAPI linter with REST API, CLI, web UI, and configurable rules.
Visit ZallyFull verdict → - OpenLint7.6/10 · Free plan
A community-built CLI for linting OpenAPI, AsyncAPI, and Arazzo with custom rules.
Visit OpenLintFull verdict →
Zally vs OpenLint: questions
Which is better for API linting tools, Zally or OpenLint?
Zally scores higher on our rubric for api linting tools: 7.9 against 7.6 out of 10; our editors rank them #2 and #6.
How do Zally and OpenLint compare?
Of the 6 checks we put side by side, Zally leads on none, OpenLint on 1, and 5 are level. AsyncAPI linting only on OpenLint.
Do Zally and OpenLint have a free plan?
Zally: Yes. OpenLint: Yes.
More comparisons
- Spectral vs Zally
- Spectral vs OpenLint
- Zally vs APIMatic
- Zally vs vacuum
- Zally vs IBM OpenAPI Validator
- Zally vs Thymian
- Zally vs AEP OpenAPI Linter
- APIMatic vs OpenLint
All API linting tools comparisons → · Full ranking →
Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026
Last updated · How we research and update