What are some alternatives?
Apigee - Intelligent and complete API platform
Gravitee.io - Gravitee.io is a flexible, lightweight and an open source API management solution.
Postman - Postman is the most efficient way to test, develop and document APIs.
Apiary - Collaborative design, instant API mock, generated documentation, integrated code samples, debugging and automated testing
Moesif - API Analytics for Platform Teams
Tyk - Tyk is an open-source API gateway and API management platform.