Side by side
OpenAPI Mock vs Stoplight Prism
Both stand on api mocking tools. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan LinuxSelf-hostedWindows
OpenAPI Mock offers flexible response generation and deployment options for OpenAPI 3.x. Its reference and request-validation limits, along with sparse validation errors, matter if those capabilities are needed.
Visit OpenAPI Mock
Free plan APISelf-hostedWeb
Choose Prism if you need a free, open-source server for mocking APIs, validating data, or checking a target API against its OpenAPI document. If you want hosted mock servers, Stoplight offers them through its Platform and Studio products.
Visit Stoplight PrismThe facts
| OpenAPI Mock | Stoplight Prism | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Linux, Self-hosted, Windows | API, Self-hosted, Web |
| Lowest paid plan | Not published | Free or on request |
| Plans published | None | 1 |
| Maker | Not published | Not published |
| Website | github.com | github.com |
| On api mocking tools | #20 of 26 | #16 of 26 |
OpenAPI Mock: what it does well
- Free and open source under the MIT License
- Supports OpenAPI 3.x in JSON and YAML
- Responses can use schemas or examples
- Runs on Linux, Windows, or Docker
- Configuration supports CLI, environment variables, YAML, and JSON
What to know first
- XML output is basic and omits XML tags
- Remote and URL references are unsupported
- Request-data validation is unsupported
- Validation errors lack details
Stoplight Prism: what it does well
- Creates mock servers from OpenAPI descriptions and Postman Collections.
- Validates request and response data against an API description.
- Proxy mode identifies differences between a specification and target API.
- Runs standalone or in continuous integration.
- Offers npm, binary, Docker, and Docker Compose installation options.
What to know first
- Running through Node.js requires version 18.20.1 or later, with a lower minimum for Node.js 18.x.
- Hosted mock servers are offered through Stoplight Platform and Stoplight Studio.
Alternatives to OpenAPI Mock Alternatives to Stoplight Prism The whole list