I've been working on something for a while that I think could represent a fundamental shift in constructing software. It's essentially an environment that takes collections of nodes and assembles them into self-defined constructs. Since there's nothing more than these simple key-value nodes, anything that is created is a matter of cloning an existing node, removing one, or setting the nodes state. There's no textual syntax besides operators in expressions. I haven't published the results yet, but if you're interested in finding out more, feel free to email me.