PPanGGoLin (Partitioned PanGenome Graph Of Linked Neighbours) is a bioinformatics software for the analysis of pangenomes – all the genes present in a group of related organisms. This project began in 2016, the aim of the software being to help microbiologists compare bacterial genomes on the mass scale, particularly to study genome evolution, gene diversity and the stable and variable parts between these genomes. The PPanGGOLiN software works with graphs that represent the colocation relationships between genes in genomes.