Add Mac Clean

[iliyami]

Adding Mac Clean — a new open-source CleanMyMac alternative.

Checklist

• Edited applications.json (not README.md)
• Single PR for single suggestion
• Used the required JSON format
• Description ends with a period
• No duplicates (searched before adding)

About the project

Free, open-source (BSD-3 license) Mac cleaner / optimizer / malware scanner. Swift 6, SwiftUI, macOS 14+.

Categories used: system, utilities (both exist in categories.json)

Features:

• Smart Scan (one-click cleanup across 13 modules)
• System Junk (16 scan categories — caches, logs, language files, broken prefs, Xcode junk, iOS backups, universal binaries, etc.)
• Malware scanner with signature matching (3 scan depths)
• Privacy cleanup (Safari/Chrome/Firefox)
• Uninstaller with 10-level matching engine for leftover detection
• Space Lens (squarified treemap)
• Duplicates (progressive size → partial SHA-256 → full hash)
• Menu bar monitor (CPU/RAM/Disk/Battery/Network)
• XPC privileged helper for maintenance tasks

No telemetry. No subscription. 56 tests passing on each push.

Thanks for maintaining this list!