Correspondence Analysis and Related Methods Network, with R scripts and data from Biplots in Practice, Correspondence Analysis in Practice (second edition), and from Multiple Correspondence Analysis and Related Methods.
Jan de Leeuw’s website for the Gifi system (centred around multiple correspondence
analysis and related methods) and R functions.
Michael Crawley’s material from his book Statistics: an Introduction Using R.
Source of many data sets from the International Social Survey Program.