The animation on the Syndicated Actors home page [0] does a pretty good job of showing the difference, I think. Goblins is much more similar to the classic actor model shown at the beginning of the animation. The "syndicated" part, as far as I understand, relates to things like eventually consistent state sync being built-in as primitives. In Goblins, we provide the actor model (actually the vat model [1] like the E language) which can be used to build eventually consistent constructs on top. Recently we prototyped this using multi-user chat as a familiar example. [2]