Mac Sai
mac-sai · v1.18.8
System cleaner, optimiser, and malware scanner
brew install --cask mac-sai Trust Score 7/10
Version History
v1.18.8Review
Jul 7, 2026Mac Sai is a free, open-source alternative to paid system cleaners, offering tools for cleaning, optimizing, and malware scanning. Built with modern Swift 6 and SwiftUI, it's Apple-notarized and actively maintained.
Mac Sai is a system cleaner, optimizer, and malware scanner for macOS.
Maturity: The project is mature with active development and a strong GitHub presence.
Community: No significant community discussion found on Reddit or HN.
Pros
- + Free and open-source
- + Modern Swift 6 and SwiftUI architecture
- + Apple-notarized for security
- + Actively maintained with frequent updates
Cons
- - Low recent installs
- - No auto-update feature
- - Appeals to a niche audience
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