JINX is a Java-based multi-user Unix-like environment that allows each user to remotely run their own java programs. Also the home of CurseHTTPD, a non-blocking java HTTP server.
EBML, or Extensible Binary Meta-Language, is a simple XML like binary language for describing data in structured style. EBML was originally designed for use in the Matroska project, but the developers saw that EBML was very flexible and extensible.