AllJoyn

Overview
AllJoyn is an open, universal, secure and programmable software connectivity and services framework that enables companies and enterprises to create interoperable products that can discover, connect and interact directly with other AllJoyn-enabled products. AllJoyn is transport-, OS-, platform- and brand-agnostic, enabling the emergence of a broad ecosystem of hardware manufacturers, application developers and enterprises that can create products and services that easily communicate and interact.

Source
AllSeen Alliance, FAQs (full-text)