Another one from google: flatbuffers. We use this at work mostly to be able to be ISSU proof in out data models. It has some useful features for this like check

Another one from google: flatbuffers. We use this at work mostly to be able to be ISSU proof in out data models. It has some useful features for this like checking that the evolution of a data model is in line with ISSU compliancy guidelines, which we check in CI.