"We are a group focused on converging and working on pre-standardization of OCapN. OCapN stands for "Object Capability Network" and provides:

CapTP (Capability Transport Protocol) which is the heart of OCapN. This protocol allows for networked programming which, with the appropriate tooling, has the convenience of programming against "networked objects" which are little different from any other asynchronous programming in the host language.
A generalized "netlayer" interface and specifications of compatible implementations. OCapN's CapTP can be run over different "netlayer" implementations ranging from Tor Onion Services to IBC to I2P to libp2p to perhaps carrier pigeons with backpacks full of encrypted microsd cards.
A URI structure for addressing machines and specific objects on machines."
Found on planet.scheme.org https://spritely.institute/news/spritely-launches-supporter-drive.html

A capability-based operating system, one of the successors of EROS (CoyoteOS seems to be another one).
According to https://sourceforge.net/p/capros/mailman/capros-devel/?viewmonth=202201 the author plans to port it ti the Raspberry pi.