Side by side
Stoplight Prism vs Tavern
Both stand on api testing tools. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
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 Prism
Free plan LinuxSelf-hosted
Tavern provides YAML-based API testing across several protocols, with reusable test data and multiple ways to run tests. Consider its lack of a GUI, monitoring, and mock servers when deciding whether it fits your workflow.
Visit TavernThe facts
| Stoplight Prism | Tavern | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | API, Self-hosted, Web | Linux, Self-hosted |
| Lowest paid plan | Free or on request | Free or on request |
| Plans published | 1 | 1 |
| Maker | Not published | Not published |
| Website | github.com | tavern.readthedocs.io |
| On api testing tools | #26 of 34 | #30 of 34 |
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.
Tavern: what it does well
- Free plan and free, open-source tool
- Supports REST, MQTT, gRPC, and GraphQL
- Checks status codes, JSON, headers, and redirects
- Reuses configuration, response, and environment values
- Can integrate with test frameworks and CI setups
What to know first
- No graphical interface
- Does not provide API monitoring
- Does not provide mock servers
Alternatives to Stoplight Prism Alternatives to Tavern The whole list