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

Datadog is a cloud-based monitoring and analytics platform that provides observability and security for cloud-scale applications

Simulate APIs, integrations, and environments at enterprise scale.

REST API client library for .NET

API Testing Platform that automatically generates unit test cases with dependency mocks from API calls

Percy is a visual testing and monitoring tool that focuses on detecting visual changes in web applications