'Giac' <https://www-fourier.ujf-grenoble.fr/~parisse/giac/doc/en/cascmd_en/cascmd_en.html> is a general purpose symbolic algebra software. It powers the graphical interface 'Xcas'. This package allows to execute 'Giac' commands in 'R'.
giacR
Interface to the Computer Algebra System 'Giac'