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10 Best JavaScript Mock Server Libraries

List hand-picked by Openbase Experts
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nock

nock

HTTP server mocking and expectations library for Node.js

2.5M

11.9K

Built-in

MIT

@mocks-server/core

@mocks-server/core

Mocks Server monorepo

8.7K

98

No support

Apache-2.0

@mocks-server/main

@mocks-server/main

Mocks Server monorepo

8.4K

98

No support

Apache-2.0

openapi-backend

Build, Validate, Route, Authenticate and Mock using OpenAPI

21.6K

425

Built-in

MIT

pretender

pretender

A mock server library with a nice routing DSL

269K

1.2K

Built-in

MIT

mocker-api

mocker-api that creates mocks for REST APIs. It will be helpful when you try to test your application without the actual REST API server.

4K

428

Built-in

MIT

@mswjs/http-middleware

@mswjs/http-middleware

Spawn an HTTP server from your request handlers or apply them to an existing server using a middleware.

5.5K

50

Built-in

MIT

egg-mock

egg-mock

Mock library for egg testing.

15.8K

145

Built-in

swagger-express-middleware

swagger-express-middleware

Swagger 2.0 middlware and mocks for Express.js

7.4K

571

DefinitelyTyped

MIT

stubby

A configurable server for mocking/stubbing external systems during development.

6.8K

254

DefinitelyTyped

Apache-2.0

create-test-server

Creates a minimal Express server for testing

2.5K

119

DefinitelyTyped

MIT

node-mock-server

File based Node REST API mock server

2.1K

242

No support

MIT

apimocker

node.js module to run a simple http server for mock service responses.

1.2K

272

DefinitelyTyped

MIT

drakov

drakov

Mock Server that implements the API Blueprint specification

777

476

No support

MIT

openapi-mock-express-middleware

Generates express mock-servers from OpenAPI specs

379

18

Built-in

MIT

the-fake-backend

Build a fake backend by providing the content of files or JavaScript objects through configurable routes.

11

53

Built-in

ISC

easymock

easymock

A simple but powerful mock server in nodejs

33

272

No support

http-server-mock

Mock HTTP server for testing HTTP clients and stubbing webservices

6

Built-in

MIT

copy-cat

A standalone server to mock various communications services for push messaging, email, and sms.

3

4

No support

MIT

hot-mock-server

hot-mock-server

An HTTP Server for Mock Data.

3

4

No support

MIT

raml-server

run a mocked server JUST based on a RAML API's definition .. zero coding

0

157

No support

MIT

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