* [mocker-api v4.0.0](https://github.com/jaywcjlove/mocker-api) – Mock REST API responses to test applications without a real backend.

* [Counterfact v2.0.0](https://github.com/pmcelhaney/counterfact) – Mock server focused on flexible, stateful API mocking for front-end development and testing workflows.

* [vite-plugin-mock-dev-server v2.1.0](https://github.com/pengzhanbo/vite-plugin-mock-dev-server) – Vite plugin that injects a mock development server to simulate API requests and responses.

* [oauth2-mock-server v8.2.2](https://github.com/axa-group/oauth2-mock-server) – Configurable OAuth 2 mock server for development and automated testing.