Jest is a delightful JavaScript Testing Framework with a focus on simplicity.

Build and test APIs easily

Simulate APIs, integrations, and environments at enterprise scale.

Playwright enables reliable end-to-end testing for modern web apps.

Postman is an API platform for building and using APIs. Postman simplifies each step of the API lifecycle and streamlines collaboration so you can create better APIs—faster.

Swagger UI allows anyone — be it your development team or your end consumers — to visualize and interact with the API’s resources without having any of the implementation logic in place