Remotor is a Java web service system. It is a very easy to use and a very fast remote procedure call engine (alike RMI | RPC). No need for Stubs, Skeletons and Naming-Services. Remotor is one of many building blocks for the COMJAT.NET framework suite.
Phosphor is a peer-to-peer file sharing program. XML network protocol, with source in Java and Swing. Uses thread pools extensively and is designed to scale very well. Chat capabilities. This is Napster done right!