zenoh is a new effort to implement another protocol targetted at IOT systems, its implemented in rust ( kudos !) and has popular language bindings like go/python/c++ to name some.
Looks like an interesting project.
Appears they can run evaluations, which I assume would be similar to SIOT rules.
Appears to be a way to transfer data between instances in a system.
Appears ADLINK is the company behind this project.
It is hard to get a sense for the project goals and what makes it unique from the web site and documentation.