You can install the development version from GitHub with:

# install.packages("devtools")

We introduce and illustrate the utility of GLMcat, the R package we developed to estimate generalized linear models implemented under the unified specification ((r, F, Z)), where (r) represents the ratio of probabilities (reference, cumulative, adjacent, or sequential), (F) the cumulative distribution function for the linkage, and (Z) the design matrix. We present the properties of the four families of models, which must be investigated when selecting the components (r), (F), and (Z). The functions are user-friendly and fairly intuitive; offering the possibility to choose from a large range of models through a combination ((r, F, Z)).