OnyX 5.0.3 for macOS Tahoe 26

OnyX is an all-in-one utility for maintaining, customizing, and troubleshooting your Mac. It brings together a wide range of advanced tools in a clear, intuitive interface—no scripts or complex commands required.

Use OnyX to:

• Verify your file system
• Rebuild Launch Services, Spotlight, and other system databases
• Rebuild mailboxes, volume information, and .DS_Store files
• Remove unnecessary files from selected locations
• Run maintenance scripts and schedule startup, shutdown, or sleep actions
• Show or hide files and folders
• Verify checksums and securely erase files
• Inspect application packages
• Search for files and content on your Mac
• Customize security settings and system behaviors
• Adjust a variety of macOS and application preferences

OnyX incorporates features from the developer’s Maintenance, Deeper, and CalHash utilities, giving you a comprehensive collection of tools in one lightweight application.

Detailed documentation is included to explain each feature and help you use OnyX with confidence. Whether you’re performing routine maintenance, investigating a problem, or tailoring macOS to your preferences, OnyX puts powerful system tools within easy reach.