DJGPP is a 32-bit C/C++/ObjC/Ada/Fortran development suite for 386+ PCs that runs under DOS (or any OS that runs DOS .EXEs, such as Microsoft Windows or IBM OS/2). It was developed by DJ Delorie, who started the project in 1989. It is a port of the popular gcc compiler, as well as many other GNU utilities such as cp, ls, mv, awk, sed, and ld to DOS DPMI (DOS Protected Mode Interface).