Sloth for MAC
Free, open-source Mac app that shows which files, folders, network connections and devices every running app has open.
Sloth Overview
Sloth shows all the open files, folders, network sockets, pipes and devices in use by every process running on your Mac. That makes it easy to find out which app is holding on to a file you cannot delete or eject, which programs are talking to the network, and on which ports. You can filter by name, access mode, volume, type or location, use regular expressions, and sort by process, file count, type and more. An inspection window gives detailed information about any file, socket or process, and a contextual menu offers handy file actions.
Sloth is a friendly graphical interface built on the lsof command-line tool, written as a fast native Mac app. It can scan with administrator privileges when you authenticate, to see processes that belong to the system. Sloth is made by Sveinbjörn Þórðarson and is free and open source under the BSD-3-Clause license. Version 3.6 needs macOS 11.5 or later and runs natively on Apple Silicon and Intel Macs.
Key Features
Sloth shows what every app has open.
- Open files: see every file and folder in use, by process.
- Network sockets: IP sockets with their status, protocol, port and version.
- Pipes and devices: Unix sockets, pipes and devices too.
- Filters: by name, access mode, volume, type, location or regular expression.
- Sorting: by process name, file count, type, process ID and more.
- Inspector: detailed macOS and Unix information about any item.
- File actions: a contextual menu for working with files.
- Root scan: authenticate to include system processes.
What’s New in Version 3.6
Sloth 3.6 refines the app for macOS 26.
- Fixed missing generic executable icons on macOS 26 Tahoe
- Minor performance improvements and bug fixes
- Interface refinements and code modernisation
Sloth FAQ
Is Sloth free?
Yes. Sloth is free and open source under the BSD-3-Clause license.
Which macOS version does Sloth need?
Sloth 3.6 needs macOS 11.5 or later.
Does Sloth run on Apple Silicon?
Yes. It is a universal app for Apple Silicon and Intel Macs.
What does Sloth show?
All open files, folders, IP sockets, Unix sockets, pipes and devices in use by every running process.
Why is my file "in use" and cannot be deleted?
Search for the file in Sloth to see which app still has it open, then quit that app.
Can Sloth show network connections?
Yes. It lists IP sockets with their status, protocol, port and version.
Why should I scan as root?
Authenticating lets Sloth also see files opened by system processes that belong to other users.
Is Sloth related to lsof?
Yes. Sloth is a friendly graphical interface built on the lsof command-line tool.
Can I install Sloth with Homebrew?
Yes. Run brew install --cask sloth.
Where does the Sloth download on sloth.FULLMAC.app come from?
The download button leads to the official Sloth website at https://sveinbjorn.org/sloth. sloth.FULLMAC.app does not change or repackage the app.
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FULLMAC.app does not host this app. Download buttons lead to the developer’s own pages.