ClamXav is a free virus checker for OS X. It uses the tried, tested, and very popular ClamAV open source antivirus engine as a back end.

I hope you like and use ClamXav a lot and that it helps keep you and your friends/colleagues virus-free. Although I'm providing ClamXav for free, I am increasingly spending more and more time developing it and would really appreciate if you would consider making a donation please. All donations (no matter how small) are gratefully received and would be a huge incentive to help me work on future versions of ClamXav, but more importantly I rely on donations to pay for my bandwidth costs. Please consider it, see the ClamXav homepage, click the 'More Information' link above on this page.

• Updated Engine to 0.98.6
• Can now stop Sentry from the ClamXav menu as well as starting it
• Fixed crash in scheduler for OS X 10.6, 10.7 and 10.8
• Fixed issue with animated Dock icon using inordinate amounts of CPU usage
• Scan log now shows the date/time correct for your own timezone
• Fixed links from ClamXav to the online documentation
• ClamXav Sentry specific updates
• Fix for incorrect "Sentry not allowed to check for ClamXav updates"
• Properly honours the exclusion settings in ClamXav's preferences
• Properly honours the "scan email" settings in ClamXav's preferences
• Support for Fast User Switching (finally!)
• Scan log now shows the date/time correct for your own timezone
• Checks clamd periodically and restarts it if necessary
• Stops clamd on quit to fix slow shutdown issue on OS X 10.10 (Yosemite)
• Improved stability particularly on 10.6
• Fixed intermittent crash when user selects "Never Scan" in the large volume prompt
• Menu now animates regardless of how quickly the scan completes
• Stopped unimportant log messages from filling up system.log
• Expert preference setting to prevent Sentry controlling clamd if you already have your own clamd monitoring setup*
  * If you enable this expert preference setting, ClamXav Sentry will NOT monitor clamd at all; it will assume clamd is always running. To enable it, run the following in Terminal:

  defaults write uk.co.markallan.clamxav clamdControlledExternally -bool YES; killall cfprefsd

• Expert preference setting to cause Sentry to prompt for FUSE filesystems which report their size as 0MB

  defaults write uk.co.markallan.clamxav.clamxav-sentry PromptForZeroSizedVolumes -bool YES; killall cfprefsd

• Expert preference setting to disable prompts for /home and /net only needed if you enable the expert pref for zero-sized volumes above.

  defaults write uk.co.markallan.clamxav.clamxav-sentry IgnoreSystemVolumes -bool YES; killall cfprefsd

• Expert preference setting to change the threshold at which Sentry will prompt to scan new disks. Default value is 100 MB.

  defaults write uk.co.markallan.clamxav.clamxav-sentry LargeVolumePromptSizeInMBs XX; killall cfprefsd