Jingle Nodes is a relay auto-discovery service that provides Jingle Relay Type Candidates that can be used in ICE-UDP and also on RAW-UDP Jingle sessions. Relay candidates can provide NAT traversal for users who don't have STUN/TURN Support, but also for users with STUN/TURN support for whom negotiation failed. It is designed to allow you to communicate freely with your friends without being attached to closed service providers like Skype or telecommunications carriers.
MIDI Sight Reader is an online music application (mupplet) inspired by its predecessor, the original MidiFlashCard system. The application scrolls both piano notes and guitar tablature. Notes are played for audio confirmation as they pass under the centerline on the window. The scrolling staffs drive a keyboard model and a guitar neck model. The guitar and keyboard can drive each other as well, for interactive exploration of the correspondence between the two instruments. The 3 components, staff, keyboard and guitar, can be independently added and removed from the top down, so many combinations of layout can be achieved.
persistence4j is a small and lightweight Java object persister that uses JDBC to persist data into a relational database. The library frees you from writing the Data transfer objects - just create a POJO and simply save it. Transactional and non-transactional connections are supported and can be configured from the simple properties file.