Sloth

Sloth is a native Mac app that shows all open files and sockets in use by all running processes on your system. This makes it easy to inspect which apps are using which files and sockets.

Features

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.
View IP socket status, protocol and version
View sockets and pipes established between processes
Inspection window with detailed macOS and Unix file/socket/process info
Powerful contextual menu for file operations
In-app authentication to run with root privileges
Very fast, responsive native app written in Objective-C/Cocoa

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. See screenshots below.

Download

Sloth is free, open source software and has a home on GitHub. It has been continuously developed and maintained for a very long time (since 2004). If you find this program useful, please make a donation.

You can download the latest version here:

⇩ Download Sloth 3.3 (~1.2 MB, Universal Intel/ARM 64-bit, 10.13+)

Sloth can also be installed via Homebrew (may not be latest version):

$ brew install --cask sloth

Older versions supporting macOS 10.8 and earlier can be downloaded here.

Screenshots