ROC++ is a C++ based platform for modeling, automatically reformulating, and solving robust optimization problems. ROC++ can address both single- and multi-stage problems involving exogenous and/or endogenous uncertain parameters and real- and/or binary-valued adaptive variables. The ROC++ modeling language is similar to the one provided for the deterministic case by state-of-the-art deterministic optimization solvers. ROC++ comes with detailed documentation to facilitate its use and expansion. It is open-source for educational, research, and non-profit purposes.