rFBP: Replicated Focusing Belief Propagation algorithm. We propose a C++ version of the Replicated Focusing Belief Propagation Julia package. Our implementation optimizes and extends the original library including multi-threading support and an easy-to-use interface to the main algorithm. To further improve the usage of our code, we propose also a Python wrap of the library with a full compatibility with the scikit-learn and scikit-optimize packages.