CoCoA-5 is an interactive Computer Algebra System for Computations in Commutative Algebra, particularly Gr\uf6bner bases. It offers a dedicated, mathematician-friendly programming language, with many built-in functions. Its mathematical core is CoCoALib, an opensource C++ library, designed to facilitate integration with other software. We give an overview of the latest developments of the library and of the system, in particular relating to the project SC-Square