There are quite literally hundreds of thousands of web services that have APIs enabling users to programmatically extract data from the platform.
Our objective with QVSource is to make it as widely connecting as possible, but with so many APIs out there, it's an impossible task to create a specific connector for each of them. So, we developed the General JSON/XML/SOAP Web API Connector, which enables you to more easily connect to many web services in a fairly straight forward and sturctured way.
Over at our documentation website we have some walk through examples where we connect the General Connector to:
We also know of users that have successfully connected to the appFigures API, EDI-Soft Shipping Exporter (a SOAP web service) and WebTrends API.