What are some alternatives?
When comparing getsandbox.com and StopLight, you can also consider the following products
Runscope - Log, monitor and measure your API usage to solve API problems fast.
Postman - Postman is the most efficient way to test, develop and document APIs.
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.
Amazon API Gateway - Create, publish, maintain, monitor, and secure APIs at any scale
Insomnia REST Client - The most intuitive cross-platform REST API Client 😴
Paw - Paw is a REST client for Mac.