Provides a user-friendly framework for estimating a wide variety of cross-sectional and panel stochastic frontier models. Suitable for a broad range of applications, the implementation offers extensive flexibility in specification and estimation techniques.  sfa is currently hosted on CRAN.   

To install in R: 

install.packages("sfa")

library(sfa) 

NB:   RTools may be required for the installation.  A previous Github version of the package was davidhbernstein/sfm.