Program packages for point groups and space groups with subgroup chain symmetry adaptation. A new program for point groups is released and the program package for space groups by J. Ping et al. [Comput. Phys. Commun. 52, 355 ff. (1989)] is upgraded. The characters, irreducible matrices and Clebsch-Gordan coefficients of any crystallographic point group G or space group G adapted to any canonical group chain G⊃H⊃K can be calculated ab initio for both single-valued and double-valued representations and tabulated with exact values in the form of p/qexp(iπm/n) or p/qexp(icos -1 m/n).