I believe you're correct according to the linked Github repo: > Sloth is essentially a friendly, exploratory graphical user interface built on top of the lsof

I believe you're correct according to the linked Github repo: > Sloth is essentially a friendly, exploratory graphical user interface built on top of the lsof command line tool. The output of lsof is parsed and shown in a sortable, searchable outline view with all sorts of convenient additional functionality.