What are some alternatives?
When comparing Mmock and Postman, you can also consider the following products
Paw.cloud - Paw is a REST client for Mac.
DreamFactory - DreamFactory is an API management platform used to generate, secure, document, and extend APIs.
Runscope - Log, monitor and measure your API usage to solve API problems fast.
Apigee - Intelligent and complete API platform
AWS CloudTrail - AWS CloudTrail is a web service that records AWS API calls for your account and delivers log files to you.
soapUI - SoapUI Pro is one of the most prominent API testing platforms around, allowing developers to quickly prototype the functions of their apps and get them to market with little hassle.