RProtobuf is a free and open source library which will provide R developers with facilities to read, write, ... Google Protocol Buffers files and messages.
Protocol Buffers have native support for C++, Java and Python -- via official implementations provided by Google.
RProtobuf is one of a number of Third Party Addons for languages ranging from pure C to Clojure, Erlang, Haskell, Perl, Ruby and more.