Started writing Apple II software in BASIC when I was 10 years old. Sold my first application later that same year. Transitioned into direct 6502 coding in high school, followed by 65816 assembly and C on the Apple IIgs.
During college, I released my first shareware title (ProBOOT IIgs 3.0) in the spring of 1991. It was successful enough that I released several increasingly cool versions of it, and then eventually started cranking out more shareware and freeware titles for the Apple IIgs. Over the following years, I was among the most prolific authors of Apple II software; my best-known projects are probably Shifty List, ImageMaker and DiskMaker, WebWorks GS, and of course, the Apple IIgs port of the classic first person shooter Wolfenstein 3D.