The Potsdam answer set solving collection, or Potassco for short, bundles various tools implementing and/or applying answer set programming. The article at hand succeeds an earlier description of the Potassco project published in Gebser et al. (AI Commun 24(2):107–124, 2011). Hence, we concentrate in what follows on the major features of the most recent, fifth generation of the ASP system clingo
... [Show full abstract] and highlight some recent resulting application systems.