No specific info about version 2016. Please visit the main page of Avast Free Mac Security on Mac Informer.
This is not for 10.5.8 but for 10.6.8.
Powerful Norton protection for your PCs, Macs, smartphones, and tablets.
ESET Cyber Security Pro represents a new approach to truly integrated computer security.
Protects you against all kinds of threats providing security against viruses.
PDF Security can add or remove PDF security in thousands of PDF files.
Kaspersky Internet Security is a Mac antivirus application.
This is not for 10.5.8 but for 10.6.8.