- On-screen alerts
- On-demand scanning
- Web Shield, Mail Shield, File Shield
- Automatic virus definition updates
- New (and much nicer) main UI.
- Added command "Scan with Avast!" into Finder's context menu
- Preferences has moved from System Preferences into the main application (menu Avast > Preferences)
- No user registration required.
- Complete support for 64bits. (In version 8.0 the antivirus engine was still running as 32bit for historical reasons.)
- Many structural changes and fixes more...
- OS X 10.6.8 or later