The latest stable version is on CRAN.

install.packages("Countr")

You can install the development version of Countr from Github:

library(devtools)
install_github("GeoBosh/Countr")

# Overview

Flexible univariate count models based on renewal processes. The models may include covariates and can be specified with familiar formula syntax as in glm() and package ‘flexsurv’. The methodology is described in a forthcoming paper in the Journal of Statistical Software. The paper is included as vignette vignette("Countr_guide") along wth several additional vignettes containing worked examples and additional details, see Countr CRAN page.

The package is developed by Tarak Kharrat and Georgi N.Boshnakov.