Sloth

github.com/sveinbjornt/Sloth Mac Apps Open-source projectOpen source

Sloth shows open files, directories, sockets, pipes, and devices used by running processes on Mac.

github.com/sveinbjornt/Sloth
Sloth homepage screenshot

About Sloth

Sloth is a native Mac app that shows open files, directories, sockets, pipes and devices used by running processes. It is built on the lsof command line tool, parsing its output into a sortable, searchable outline view.

It supports filtering by name, access mode, volume, type, location or regular expressions, with an inspection window and contextual menu for file operations. The current release requires macOS 11 or later, with older releases available for earlier macOS versions.

Key features

  • Lists open files, directories, sockets, pipes and devices by process
  • Filters by name, access mode, volume, type, location or regex
  • Sorts by process name, file count, type, process ID and user ID
  • Displays IP socket status, protocol, port and version
  • Shows sockets and pipes established between processes
  • Supports in-app authentication to scan with root privileges
Best for: Mac users who need to inspect which running processes are using specific files, sockets, or devices.
Good for
  • Open source with source code available under a BSD license
  • Presents lsof output in a sortable, searchable outline view
  • Includes inspection window with detailed file, socket and process information
Watch out for
  • Current release requires macOS 11 or later; older macOS needs older releases
  • Homebrew install may not provide the latest version

Sloth at a glance

Type
Open-source project
Pricing
Not confirmed. Check the site
Platforms
macOS
Open source
Yes · Source code
Language
English
Last checked
Oct 6, 2026 · Online when checked
Listed
Oct 5, 2026

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Sloth FAQ

How does Sloth collect process information?
It is built on top of the lsof command line tool, parsing its output into a sortable, searchable outline view.
Which version works on older macOS releases?
Version 3.4 works on macOS 10.13-10.15 and version 3.2 works on 10.9-10.12.
Can Sloth be installed with Homebrew?
Yes, with brew install --cask sloth, but that method may not provide the latest version.
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