sloth ☆

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Description:
Displays all open files and sockets in use by all running processes

Type: Cask | Latest Version: 3.5@0 | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: System utilities

Tags: macos monitoring lsof gui system-utility diagnostics

Install: brew install --cask sloth

About:
Sloth is a native macOS GUI application that provides a comprehensive interface to the lsof command, visualizing all open files, sockets, and network connections in use by every running process on the system. It allows users to quickly identify which applications are accessing specific files or network resources, making it an essential tool for system diagnostics and security analysis. The tool presents this complex information in an easily searchable and sortable list, enabling detailed inspection of system activity.

Key Features:

Graphical interface for lsof command output
Real-time monitoring of file and socket activity
Advanced search and filtering capabilities
Detailed process and file information display
Ability to inspect files held by specific processes

Use Cases:

Identifying which processes are locking files or directories
Debugging network connection issues by inspecting open sockets
Security analysis to detect suspicious file or network access
System administration for monitoring resource usage

Alternatives:

lsof – Command-line tool providing raw data; Sloth offers a graphical, filterable interface for easier analysis
Activity Monitor – Built-in macOS utility; Sloth provides more granular detail on individual file and socket handles
htop – Advanced process viewer; Sloth focuses specifically on file and network handle inspection

Version History

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