EMMIX-skew R program for fitting mixtures of multivariate skew-normal and skew-t components (restricted version).
Readme_rskew.txt of the package
See also CRAN package

EMMIX-uskew R program for fitting mixtures of multivariate skew-normal and skew-t components (unrestricted version).
Readme_uskew.txt of the package
See also CRAN package

EMMIX-cskew R program for fitting mixtures of CFUST components.
Readme_cskew.txt of the package