When comparing The Unarchiver vs ClamXav, the Slant community recommends The Unarchiver for most people. In the question“What are the best Mac OSX apps for someone that's new to Apple?” The Unarchiver is ranked 1st while ClamXav is ranked 28th. The most important reason people chose The Unarchiver is:
The app can be set up to work just as the built-in Archive Utility OSX comes with so that archives are extracted by a simple double-click.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Excellent Finder integration
The app can be set up to work just as the built-in Archive Utility OSX comes with so that archives are extracted by a simple double-click.
Pro Monitor directories easily
The Sentry Feature monitors specific directories 24/7 as well as removable media which includes USB & external drives, all those .dmg files you open when installing apps etc. I add all directories that files are downloaded as a "screening" process.
Pro Lean
Not overly invasive or processor hungry as other antivirus programs
Cons
Con Lacks RAR5 support
RAR 5.0 format introduced in 2013 uses a new compression algorithm that is not compatible with previous versions of the format. As such, all software needs to be updated to include support for RAR 5.0 and The Unarchiver has not yet added it.