Sloth
Mac app that shows all open files, directories, sockets, pipes, etc.
...View all open files, directories, IP sockets, devices, Unix domain sockets and pipes. Filter by name, access mode, volume, type, location, or using regular expressions. Sort by name, process ID, user ID, process type, bundle identifier, etc. Sloth is essentially a friendly, exploratory GUI built on top of the lsof command line tool. The output is parsed and shown in a searchable, filterable outline view with all sorts of convenient additional functionality. Sloth is free, open source software and now has a home on GitHub. It has been continuously developed and maintained for a very long time (since 2004). ...