What are some alternatives?
Apigee - Intelligent and complete API platform
DreamFactory - DreamFactory is an open source REST API backend for mobile, web, and IoT applications.
MuleSoft - MuleSoft provides an integration platform for connecting any application, data source or API, whether in the cloud or on-premises.
Sentinet - API Management and SOA Governance for enterprises and developers
Apiary - Collaborative design, instant API mock, generated documentation, integrated code samples, debugging and automated testing
AWS CloudTrail - AWS CloudTrail is a web service that records AWS API calls for your account and delivers log files to you.