Lattice C

Lattice C (according to its author, Lattice Corporation) was the first C compiler for the IBM PC, in 1982. It was ported to many other platforms, such as mainframes (MVS), minicomputers (VMS), workstations (UNIX), OS/2, the Commodore Amiga and the Sinclair QL.

The compiler was subsequently repackaged by Microsoft under a distribution agreement as Microsoft C. In 1987 Lattice was bought by SAS Institute (not, as often alleged, by Microsoft). After a further release of the compiler as SAS C, compiler development then ceased for all platforms except IBM mainframes. The product is still available in versions that run on other platforms, but these are cross compilers that only produce mainframe code.