We have used Macs in our business for years. For accounting purposes MYOB has served us well, but unfortunatley it is no longer supported in Canada. Basically means you can't get support or new payroll tables.
My wife is our bean counter (book keeper), she tried Quickbookds didn't like it. Also tried Simply Accounting, but didn't like it because once you created an invoice you could not reopen and edit it. This may have changed in newer versions. Simply accounting has also incorporated a POS system.
We use a program called Shop Keeper for POS. It is based on Filemaker Pro. It seems to be fine, easy to use. You can check it out on the net www.shopkeeper.com
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