SDC SDKs List
The sdc project consists of a few additional sub projects listed below:
SDC SDKs Explanations
SDC-TOSCA and SDC-DISTRIBUTION-CLIENT
This is a link to a document describing the usage for the sdc-tosca, sdc-jtosca and sdc-distribution-client projects: SDC Sub Projects
The link describes the use of distribution client and the sdc-tosca.
jtosca is used by sdc-tosca as a dependency and is not used separately