Mock Service Worker (MSW) vs Nock
No clear leader: Nock (62.8) and Mock Service Worker (MSW) (58.1) are within the 5-point margin; treat as a tie. The attribute-by-attribute breakdown below, with a source and date on every value, is the honest way to compare them.
Capabilities
Feature-by-feature on the axes that matter for api mocking. “-” means undocumented, not absent.
What each one is
The product in its own terms, so the numbers below have context.
Mock Service Worker (MSW)
An API mocking library that intercepts network requests at the browser and Node.js levels, allowing consistent mock responses across testing frameworks, tools, and applications without requiring client-specific stubs or configuration.
Nock
An open-source library that allows developers to test modules making HTTP requests without external dependencies by mocking server responses.
Pricing
List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.
Platform & deployment
Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.
Integrations
What each product connects to. Counts come from the vendor's own integration directory where one exists.
Mock Service Worker (MSW)
- Vitest
- Playwright
- Storybook
- React Native
- Express
- fetch
- axios
- react-query
Nock
Not documented yet.
Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.