It is one platform where you can view all public or private APIs for your project. It is very beneficial for developers to visit and view all APIs with their proper documentation and usage. The platform also updates Do's and Dont's for APIs regarding costs, license, and policy.

I like the API Security Manager and api testing tool

The platform's unique offering of features covers the entire spectrum of API management, ranging from the marketplace, discovery, audit, and playground aspect to an extensive API testing and security suite. The API collection/catalog is extremely rich, and it is easy to find a suitable API for most use cases. There are additional features, like the source code scanner and legal document/license evaluation, which I haven't used much personally but I can see how it benefits larger teams and enterprises.