You can install the development version from GitHub with:

# install.packages("devtools")

We introduce and illustrate 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 cdf 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).