json-server vs Mock Service Worker (MSW)
On the evidence we track, json-server leads this comparison with a composite score of 82/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.
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.
json-server
LeaderAn open-source tool that generates a full-featured REST API server from a JSON or JSON5 file, enabling rapid prototyping and testing without backend development.
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.
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.
json-server
LeaderNot documented yet.
Mock Service Worker (MSW)
- Vitest
- Playwright
- Storybook
- React Native
- Express
- fetch
- axios
- react-query
Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.