H. Peter Anvin

NASM is an 80x86 assembler designed for portability and modularity. It supports a range of object file formats including Linux a.out and ELF, COFF, Microsoft 16-bit OBJ and Win32. It will also output plain binary files. Its syntax is designed to be simple and easy to understand, similar to Intel's ... [More] but less complex. It supports all current x86 opcodes, and has macro capability. It includes a disassembler as well. [Less]