OnyX

System · Maintenance

Mac

Multifunction maintenance utility for verifying system files, cleaning caches, rebuilding databases and changing hidden settings in macOS and Apple apps.

Get it

Download from the developer

Install with Homebrew: brew install --cask onyx

The promise

✓ No ads
✓ No purchases
✓ No subscriptions
✓ No trials
✓ No nagging
✓ No surprise bundles

Transparency

✓ Works offline ✓ No account needed

Something wrong?

Reports go to a human review queue. No timeline promised — this is a small pilot, but every report gets read.