The Hydra middleware allows developers to incorporate heterogeneous physical devices into their applications by offering easy-to-use web service interfaces for controlling any type of physical device irrespective of its network technology such as Bluetooth, RF, ZigBee, RFID, WiFi, etc. Hydra is available as Open Source.

The demo below illustrates the strengths of Hydra. The webcam shows a live picture from the CNet Office. The different devices are all equipped with a smart meter. Using a Hydra application you can control all the devices over the Internet and also measure their electricity consumption.You can try this by clicking on the greeen switches below.In addition to the devices there are also different sensors that provide info about temperature and wind. Read more about the Hydra middleware. You also download a tutorial, here, and write your own Hydra application. Read more