CPIK 0.73 has been ported to OS/2-eCS.
Hobbes: http://hobbes.nmsu.edu/h-search.php?key=cpik
"CPIK is a PIC 18 microcontroller C compiler.
CPIK is a C language compiler devoted to PIC microcontroller programming. Coupled with a simple PIC programmer it can be used to program a PIC series 18 microcontroller under OS/2."
Port by: Mentore Siesto