When comparing CheatSheet vs ClamXav, the Slant community recommends CheatSheet for most people. In the question“What are the best Mac OSX apps for someone that's new to Apple?” CheatSheet is ranked 14th while ClamXav is ranked 28th. The most important reason people chose CheatSheet is:
As in price, not open source code.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Free
As in price, not open source code.
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 Non negligible processor ressources use
For such a tiny app, with a very limited function, idle most of the time, it actually is using non negligible processor ressources (frequently around 2% when not in use, and totalling more than Alfred, Dropbox or 1Password, for example).