The Caustic Core will always refer to the libcaustic.so that is included in the framework I have written, git/CausticSDK. The Caustic Core is the central OSC messaging hub that takes in osc messages and gives out values for command queries.
Caustic Core SDK
The OSC messages are wrapped by a Java layer that is know as the CausticSDK project on GITHub located at;
The above link is the actual source code and Android Library projects you will need to download/clone to get this all working.