GLIM (an acronym for Generalized Linear Interactive Modelling) is a statistical software program for fitting generalized linear models (GLMs). It was developed by the Royal Statistical Society's Working Party on Statistical Computing(later renamed the GLIM Working Party),chaired initially by John Nelder.It was first released in 1974with the last major release, GLIM4, in 1993.GLIM was distributed by the Numerical Algorithms Group (NAG). The GLIMPSE system was later developed to provide a knowledge based front-end for GLIM. GLIM is no longer actively developed or distributed.