The stable version of CAST platform (2.0.x) is avaiable via Eclipse update-site:
http://caribou.iisg.agh.edu.pl/proj/cast/update_2.0.x/
In order to start development of new CAST plugins it is necessary to install CAST Platform in the Eclipse RCP environment. All necessary plug-ins and features are available through CAST Update Sites. Follow the steps below:
The development version of CAST platform is available via the GIT repository. Details about accessing the repository can be found at Source code