NASM

NASM, short for the Netwide Assembler, is an assembly language compiler designed for the x86 architecture.

It was invented by Simon Tatham and Julian Hall in 1996.

NASM is an open-source assembler, meaning its source code is freely available for modification and distribution.

It supports two main versions: x86-64, which is designed for 64-bit systems, and a 32-bit version for compatibility with older systems.

The x86-64 version allows programmers to take advantage of modern 64-bit processors and their extended registers.

The 32-bit version is ideal for developing software for legacy hardware or operating systems.