First: What are OSGi Remote Services?
OSGi remote services defines a simple, standard API...using normal OSGi services...for exposing services for remote access. ECF has supported the OSGi Remote Services specification for more than a year...and it's been hardened through community usage, bug reporting, and feedback.
What is RSA?
RSA is an enterprise management agent for OSGi Remote Services. As of ECF 3.5), we fully support the RSA specification, which allows very fine-grained control, management, and security for enterprise remote services. Specifically, it's possible for the both the remote service discovery and distribution to be customized or extended as dictated by the (enterprise) use case...without resorting to non-standard API.
Why ECF's Implementation?
ECF's implementation has a number of unique technical attributes, including transport independence through multi-provider architecture, support for asynchronous remote services, support for Felix and other OSGi frameworks, small code size, and open, community-based development process.