MOCKtastic vs Sandbox: What are the differences?
What is MOCKtastic? Easy, offline, mock API servers. Decouple your client side dev from your API dev Just create a mock API, publish it to your team, and get started on the actual work..
What is Sandbox? Quick and easy mock RESTful API and SOAP webservices. Quickly mock RESTful API or SOAP web-services with simple or dynamic responses, and fault injection to simulate real application behaviour.
MOCKtastic and Sandbox can be primarily classified as "API" tools.
Sandbox is an open source tool with 161 GitHub stars and 28 GitHub forks. Here's a link to Sandbox's open source repository on GitHub.