XM, the Expert Model for DNA compression

DNAcompress-XM – the eXpert Model – software is at
[github.com/mdcao/japsa]
together with other bioinformatics software by Minh Duc Cao.
 
Was at
ftp://ftp.csse.monash.edu.au/software/DNAcompress-XM/
– until monash pulled the plug on ftp.csse.monash.edu.au in 2014.
 
Note, there is a reimplementation ("FuzzyLZ") by Dave Powell of the (different) 'approximate repeats model' of DNA [here].
 

(Also see [Bioinformatics].)