AllJoyn is a system that allows devices to communicate with other devices around them. A simple example would be a motion sensor letting a light bulb know no one is in the room it is lighting, so it can shut itself off.

The system itself is an open source project which provides a universal software framework and core set of system services that enable interoperability among connected products and software applications across manufacturers to create dynamic proximal networks using a D-Bus message bus. Qualcomm has led development of this open source project, and first presented it at the Mobile World Congress 2011. Unity Technologies has provided the 'AllJoyn Unity Extension' packaged with the AllJoyn SDK release 2.3.6 and above. Major OEM and ODM partners includes Foxconn, Technicolor, LG-Innotek, LeTV and Xiaomi.