The embedded Alfresco based technology in Content Services does have an
implementation JCR. You could use its java APIs to program to for
storing content in content services.For connectors to other repositories
the thing to use these days is CMIS, a new industry standard. With this,
you will be able to connect to content repositories that don't have JCR
APIs (SharePoint, others)http://wiki.alfresco.com/wiki/CMISlists server
implementations,client apis (chemistry and alfresco also have java
clien...