I didn't write Mac shareware, but did write some PC shareware back in the DOS days, mainly focused around FASA's BattleTech universe. Contacted FASA to make sure my programs were OK with them, which it was as long as I did not include any of their maps or mech's stats. Only 12 registrations in 2 years. Woohoo! Didn't have any sort of Mac until the late 90's/early 2000s.

Since I started programming full-time in 1996 I have not done any projects for my own amusement. Would love to do it again, but need to find the time.