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What would be an appropriate replacement for embedded systems? I've looked at the "tiny" versions of protobuf (nanopb, etc), but haven't tried them yet.

Are protobuf competitors (flatbuffers, capnproto) appropriate for small embedded systems (microntrollers, mostly <64K RAM).

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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#issuecomme...

Caveat: I don't have any personal experience with embedded systems.

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