I think an implementation of Cap'n Proto that's actually optimized for embedded systems would likely be smaller than any implementation of Protobuf could be. Ho

I think an implementation of Cap'n Proto that's actually optimized for embedded systems would likely be smaller than any implementation of Protobuf could be. However, I'd have to admit that the current Cap'n Proto C++ library is not so optimized. Here's a GitHub comment where I outlined what we'd need to do to fix that, FWIW: https://github.com/capnproto/capnproto/issues/844#issuecomment-504641785 https://github.com/capnproto/capnproto/issues/844#issuecomme... Caveat: I don't have any personal experience with embedded systems.