The Mark Williams Let's C compiler was powerful C compiler for
MS-DOS. Let's C was a subset of the Mark Williams C Programming
System, and the first low cost entry-level professional C compiler
for the IBM PC. It was also the first compiler to have a C
source-level debugger.
executables than any other compiler on the market at the time. It
supports both large and small x86 models, and supports the 8087 math
co-processor. It competed
against compilers from Digital Research, Lattice, Computer
Innovations, and Microsoft.
language, plus extensions to C implemented under UNIX. Includes an
assembler, loader, archiver, advanced symbolic debugger. C shell,
utilities and Micro-EMACS, a full-screen editor.
Unix and the Atari ST. Let's C is fully compatible, so C programs can
easily be ported between the ST and IBM PC.
Coherent, the first commercially viable Unix clone.