"Play with Experimental Extensions, you can create Scratch projects that connect with external hardware (such as electronic devices and robotics) and online resources (including web data and web services)."
"SoLiD is a proposed set of conventions for building decentralized social applications on the Linked Data stack. SoLiD is modular and extensible. It relies as much as possible on existing W3C standards. SoLiD applications are somewhat like multiuser applications where instances talk to each other through a shared filesystem, and the Web is that filesystem. "