My text editor (Assembler, then C), 1982.
Some F18 Hornet software (C, ground station support), also 1982.
Humphrey Utrasound Biometer (updates, Z-80 assembler), 1992.
Kodak Spark-based picture kiosk (Solaris 8 upgrade, Solaris patches for FAT, USB, PCMCIA), 1999.
But why?