For the most part, all the commercial antivirus tools for Mac OS X offer the same range of features. The differences lie in their interfaces and occasionally in their pricing. All pretty much offer the same features, including the ability to schedule scans and updates of virus definition files (the files that an antivirus tool uses to detect viruses), the ability to scan specific files and folders and to exclude files and folders from scans, the ability to determine how infected files should be handed (delete, attempt to remove the virus from the file, place in a special quarantine folder), and the ability to automatically scan storage devices and disks when they are connected to your Mac or inserted. The four commercial options include the following:
With the exception of Symantec Anti-Virus for Mac, you can download an evaluation version of each tool to determine which one you prefer. Also, the current versions of all four are universal binaries, meaning that they will run natively on Power PC Macs and the new Intel Macs.