SuperBonBon Industries has released UPNPLib, an open source (Apache license) universal plug and play library for Java."UPNP™ is a protocol based on SSDP to discover UPNP™ compliant devices on a network. Specific search can be made to only look for a specific type of device or for all devices available. Once a device is found on the network, the client can retreive the device description ( devices state variables and available operations ) and start to interact with it using XML messages." Java 1.4 or later is required.