Frequency for Mac OS 9 Posted bybrad April 21, 2003 Leave a comment on Frequency for Mac OS 9 Frequency for Mac OS 9 is out. Now to knuckle down on the Windows version. Then it’s time to add post editing… By the way, I’m “eating my own dog food” here. I use Frequency to keep this site up-to-date. Share this:PrintEmailFacebookTwitter