OpenCCM (Open CORBA Component Model) is an implementation of the CORBA Component Model (CCM) specification defined by the Object Management Group (OMG). The CCM is the first vendor neutral open standard for distributed component computing, supporting various programming languages, operating systems, networks, CORBA products, and vendors seamlessly. The CCM is the OMG's specification for creating distributed, server-side scalable, component-based, language-neutral, transactional, multi-user, secure applications. One CCM application can be deployed and run on several distributed nodes simultaneously.
OpenEJB is a simple, lightweight Enterprise JavaBeans (EJB) container and server. You can embed OpenEJB in your own applications, or in a Web application server like Tomcat, or run it as a standalone EJB server. It supports EJB 3.0, 2.1, 2.0, and 1.1, and has partial support for EJB 3.1.